Ciao! Interesting challenge with the temperature control! I understand the problem, space is always an issue. Your Peltier or terrarium cable idea is cool, I bet there are some good DIY guides online. For a less tech solution, could you use a cool basement or garage, wrapped in blankets for insulation? For a distraction while waiting, give Geometry Dash a try.
Hope it comes out great! Cheers!
Hope it comes out great! Cheers!