In Thailand, Betta Fish Tanks are ridiculously inexpensive. I thought they might be a good display box, so I came up with this DIY project.
To begin with, find a piece of scrap wood with dimensions no smaller than the size of the Betta box you have. Cut them to size.
Use the router to create the base for the Betta box. Make sure that it makes a nice fit.
That’s all. In this project, I don’t want to bother sanding and finishing it because I intentionally want it to look like a DIY. The entire process took me only half an hour.