If you like the birdhouse 'look' you can always put one up with no holes in it.
Painted turbine
Short Glass totem

I have a 4x4 post that I concreted into a ceramic pot. I screwed hanging brackets into the sides of the post and hang all kinds of stuff from it.
Windchimes
Lanterns
Glass jars with candles inside.
The options are limitless.

I also took some heavy duty fishing line and ran it from bottom to top, tied it to some paneling nails, and can grow all kinds of vines up it.
In fact, I have a picture of it in my Photobucket

Here is a link that might be useful: {{gwi:136616}}

Really nice ideas thank you!

I am going to make a bottle tree out of mine .

You could put a wood finial of some kind on the top of the post...or a fancy cap...and add your house numbers vertically to the front of the post...then plant that small 2x2' bed with lots of beautiful annuals...that way you can change it out with seasons...like a couple pumpkins/Indian corn in the fall. Jeanne S.