A simple modular deck box for people who have a lot of decks to carry around. It uses an 8x3mm magnet to stay together. I know it's not perfect, but it's my first project.
Yeah, as @stubby said, use a piece of filament a little longer than the lid's length (make sure that there is a bit of filament sticking out from both sides) and use a lighter to melt the two sides to make a blob of filament on either side, and Viola! You have your lid attached to the box! (the explanation is long, but it is a short process I promise [if you know how to handle a lighter responsibly])
-ozimandius_117 @ozimandius_117