So I think most of us have been there. You buy a betta in a little bowl or tank. You upgrade later. Now you've got this... bowl. This bowl you probably paid enough money for to not just wanna toss it.
So, I propose; Recycled betta bowl (or other small home) ideas!
We have our standard; roomy spot to sit during water change. Place to hide extra graven and decor. But... none of these are really appealing. How about....
Mairmo moss ball mansion?
Mini aqua garden?
My new choice... Lucky bamboo pot :P