Do you need the blinds for privacy? If not, I would leave the window bare to have light in the hall. Otherwise, you can have clear stained glass made as an insert to your window, or you could use a woven wood blind. It depends on the style in the rest of your house. If you like plants, you could put a few large plants there. If you really do have collections of small things, you could get a clear plexiglass rectangle made for the space under the window ledge, and keep your things under that where you could see them as you walk by but wouldn't have to dust them!

Ooh, not needing to dust. That's smart!

We need something for privacy since the neighbors can see straight in, the woven blind idea sounds nice!

Roman shade would be easy peasy. Penney's have custom shades frequently on sale at a reasonable price but it look like your window is standard.

Roman Shade, Vanilla, 48"x72" · More Info

I like the idea of plexiglass to protect dust on collectibles, but I'm not sure this is the best location. This is quite fun, and I would take it a step further and surround in Plexiglas for a really cool art installation. But, a layout that coordinates with your "stuff" and a tighter installation.

My Houzz: Toys and Art Make Merry in a Texas Home · More Info

have them fly out the window.

Oak + Steel Staircase · More Info

I agree! If you don't need the blinds, take them off and let the sun shine. This is what I'd do.... put in some decorative curtains that match your other decor - put the bar all the way up towards the top and all the way out towards the sides to keep the wall as one defined space and make the window look bigger. Then put two big ole plants on either side in decorative planters. Maybe really full pots of snake plant? Fill in the middle with picture frames and/or your action figure!

Is the ledge a window seat? I'd put the action figures on glass shelves across the window, add a cushion, and you'll be able to play. A handpainted figure might fit in the corner, too:

Family Room · More Info

468 Flamingo Valley · More Info

I'd go all out and get (have made?) a large planter that's the shape of a tray that would take up most of the area, but not too deep. Make it into a mini-landscape with slow-growing plants and maybe some moss, some stones, even small buildings. etc. Then pose your action figures in the landscape. Almost like a fairy garden for action figures.

Depends, if you want the nook to be a centerpiece or not...

I would suggest, that if you do, paint the area a dramatic/romantic colour and showcase it. Painting all of its edges...almost like a frame around what you would like to display. Lose the blinds tho, like anotherhas suggested...leave the window open to light...brilliant idea...no pun intended.

You could use the space to showcase selected art, antique vases, tropical/exotic plants, a collection of unique items...etc. Make it a show-stopping area that people will enjoy...even you...

if you like dramatic colours...let's say a beach theme-do a deep aqua blue, if you like a deeper romantic theme-do a burgundy or deep rust colour...the posibilities are endless...don't forget to have fun while doing it. And you can mix up the theme every now-and-then when you get bored. Cheers

If you add plants be sure you can reach to water them. But I like the idea of plants and a stained glass faux effect to keep the privacy but add light. If you get a lot of direct sunlight though, you may need the blinds to cut the heating effect in the summer. Mind you curtains would help insulate and add warmth in the winter. Or both? :-D

Saw this in a cute little mews flat on our last stay in London. How about a book case that completely surrounds the window and a shutter over the window? Once the case is loaded with books, you'll just need a telescoping duster to keep it clean. And you could curate the books by color for a really nifty focal point. https://www.houzz.com/photos/wilson-residence-transitional-home-office-sacramento-phvw-vp~2848038

As I see it you have a couple of options. It is wide enought and reachable enough to put a cushion there and hang some very interesting sconces on either side and create a comfortable reading nook (or create the appearance that someone will read there). I would add plantation shutters to allow you to adjust the amount of light and privacy necessary. The other option would be to replace the window with a leaded glass window that will offer privacy but let in plenty of light and just leaded glass as opposed to stained glass will give it an elegant colorless look. Then maybe faux paint the shelf area or top it with marble or granite and add a a trio of plants stretched across the area and do not hide the window. Good luck and have fun!

@DH Design's idea gave me another idea. You said it's too high to use as a seat - but you could make it look like a seat by putting on a cushion, and then adding a life-sized mannequin relaxing - reading or something.

Wow, so many super cool ideas! I have to say the tray concept with a diorama-style treatment is growing on me, or the arrangement of figures on the wall. I'm a quirky person so it's not unrealistic :)

Definitely step one is the window treatment, that window faces north so good light without it being direct. The stained glass films sound like a good start to test the waters.

HI -- I would keep it simple and easy to clean/dust . You could have a decorative folding screen that leaves part of the upper window open and then display one large decor item such as a garden/or resin sculpture . Or have the window frosted or a film applied and have the one big sculpture . For the window .. Wallpaperforwindows.com ..... and for a decor item ... Designtoscano.com .

You're not book people?

Just reading over some of the suggestions. I'm allergic to design elements that consist of just stuff sitting around, gathering dust, not providing any sort of useful function. Since the area can be reached from the stairs, I would have a cabinet built that would fit in the space from just under the window, and wall to wall. It can have glass doors -- perhaps lighted inside -- if you want to use it to display art or collectibles. Or, for storage, have the doors solid. That way the space is actually serving a function, and you won't have to worry about constant dusting. (The stained glass idea is good, though, but a real glass window, not a film. They're not hard to find, vintage, and actually not terribly expensive to have custom made.)