I need to see the whole space in the bedroom in tha basemetn because I do not see a window. It might help to do to scale floor plan of the basement space .

Without seeing the entire room I would put a deep custom table with space underneath for little chairs and buckets of storage

I would put the crafting area in the alcove. Table, chairs, atop are tower etc

Roughly 10’ x 20’ with a large closet

The alcove you leave as open breathing space or get custom tables built for each section. A large bookshelf in the middle section might be all you need too. We need more information. How old are the children using this space? I would be very forward thinking before I spent a ton on custom sized tables or anything really. etc. This time of life appears to be closer to the end vs the beginning from the looks of the bedroom. You are going to want to up the lighting a ton. The difference the pics shows in the two rooms is quite large light wise.

I love the idea of a Lego room I do agree a nice table that fits perfectly in the alcove is a good use of that space and once the beds are gone and all the stuff from the other space are in there it will function well . It seems organized in the other space so it will work well here . The only thing I might mention is the kids using the new space might not like being out of the main living space so their ages could affect how much they love this idea

Thanks for the feedback! The kids love the current room so hoping they will enjoy the new space.

They are currently 5 and 7 as well as we have a newborn. The goal is to make different seating areas with different heights to accommodate the age differences.

Children are all so different! I hear you Patricia. We have a basement family room. Walk out basement, large picture window when we finally succumbed to buying a 'gaming console' we put in on the basement TV. It was RARELY played with. Only if kids had friends over. Mine just never wanted to hang in the basement!

Where is the current playroom? Do you need that space back? If not I wouldn’t make all these changes yet. We also have three kids and it has taken years for them to want to play on the basement and use the space. They are now all teens and Im so glad we had it, but zero chance they would have been down there at 5 and 7

Good advice on the basement!

Our current playroom is upstairs in one of the bedrooms. We have three kids so will need it for a bedroom at some point. My boys really don’t want to share a room.

They do already play in the basement quite a bit. There is a rec room and games room down there where we play a lot.

They are a bit sad to give up their lego room upstairs that they have had for 3 years but they are outgrowing it a bit (it’s only 9x11), I built it when they were 3 and 5.

If it is already a space they use downstairs then go for it. This is so exciting. We are a huge Lego and craft family and over the years i did varying iterations of a set up. It’s such a fun age. Now our Lego bins just sit in a corner waiting for a younger cousin to come over

Thank you all! This discussion has been good and its helped with the kids too. They are leaning more now to sharing and maybe having a room designed for them and keep their current lego room.

So many of my friends' children share rooms, even when it is not needed. The kids love it. It teaches them a lot of great lessons.

With any of these arrangements, I'd try them out first, and see how it goes before investing in major design choices and certainly before built ins.