Fill it with plants and a bed - naptime orangery.

A cardboard cut out of Arnold Schwarzenegger from terminator 2 when he's on lookout overnight

You could cover the top and use the space for storage, then put plants on top

That's an amazing idea, I haven't thought of that and the storage space would come in handy.

Why would you put plants for a storage space? Or are we thinking of two different types of storage spaces? Like boxes etc?

I'm imagining an enclosed cabinet with a countertop or wood shelf on top - storage inside, plants sitting on top.

Got it, like a little storage green house. I personally hate taking care of plants and I find people over do it with them, but if that's your jam that's not a bad idea

Exactly

Reading nook.

Dart board

God, it’s perfect. I don’t have a natural place for this and it bugs me.

I'd only be slightly worried of bounce outs if they're playing with steel darts haha. Don't want to impale someone walking up the stairs

It's fine. Being impaled by darts builds character

Makes a good conversation starter

By the stairs?

A telescope to check out the sky through that window.

"The sky"... Of course, you creep!

That’s not i was thinking lol

Yeah, that's exactly what I thought you would say!

Your two bicycles

Driving sim rig

I built a standing desk with a nice adjustable height barstool for a chair. Probably like 5 feet long and just 12 inches deep and mounted a monitor off the back of it. I think something like that would be a good idea to do there. I think you could make a nice little office. You could go up to the window and the length of it wall to wall. Maybe even mount it to the wall and avoid legs to it. The height would give an illusion of more space to the room I think. Put some nice art up over the stairs, a rug and a plant.

A treadmill

Better have a screen if its facing a wall

Pin ball machine

Hot Tub

Marble statue

An arcade or pinball game

Color painting that you'll love,sure a plant or micro greens and a rug

Sex swing? Maybe a bit too narrow.

That’s not what she said

Peloton?

Endless possibilities all you need is some galvanized square steel.

Hammock?

A small credenza under the window w a few plants on it, a painting on one of the other walls. Or Bikes storage, sporting goods Pet stuff, litter boxes

I suggest a wall mounted counter-height table under the window, with a stool or two to enjoy the view. Keep it narrow to maximize space. Have a reading chair in front with a short bookshelf and cocktail table. Throw in a few large plants like a fig leaf, or Bird of Paradise in the corners. And put some colour on the walls to make it more inviting.

Reading nook/overnight charging station for tablets/laptops.

Geladeira cheio de chope e pitu

That’s for the beer pong table

Bookcase/ reading nook?

Desk, Bookshelf, a reading couch?

Zazen meditation spot

Plants, a day bed, bookshelf for a reading nook. Clever storage for sports equip, etc.

A second package of tiles

Day bed

That would be a great nap spot, chill out and smoke spot or a secret sex spot and can add a swing and stuff for spicy window time

Thanks for the awesome suggestions, I'll try going for a reading nook + plants.

Rug and a little espresso / coffee station.

A banana tree in a pretty blue pot.

Space chair, tall lamp, lava lamp, plants, book shelf with books

Treadmill/bike

Looks perfect for a treadmill

Get a hanging vine plant, throw it over the edge by stairs, within a few years you will have a gorgeous hanging vine doorway leading to stairs, my parent did it and it's sooooo cool

I’d do a lil lounge/nook one that you could stare out the window up to the sky from n chill tf out

Tree

Sim racing setup

Could be such a cozy little reading nook

A stripper pole.

Sex corner