Simple stand I made to hold my Steam Deck at a 30 degree angle, and not feel like it wanted to fall backwards. It doesn't do anything fancy, like folding, but it does have holes in the back that should line up with the vent holes on the console, if you want to use a BT controller on it to play.

It doesn't have a ton of stress on the back plate, so you can use whatever filament you want. I used 20% infill with 3 perimeters, but you can use less or more. knock yourself out. If you plan on playing it while it's on the stand, you may want to use petg or something that handles heat better than pla, just in case it wants to warp a little. I'm sure it will be fine if it gets warm tho.