Stackable SNES Cart holder

I've just got some new shelving to organise all my video games neatly, but the SNES carts really don't work. They have a rounded shell and so don't go into a neat pile and you can't stack them on top of one another as you'd end up with a random pile of carts.

So I designed this little holder. The idea is that you put 5 SNES carts in each one, and because the holder holds them nice and tightly you can go ahead and stack another holder on top. This has resulted in far more efficient storage for me.

The centre part of each of the carts holders is probably a little redundant. I was looking to make sure the cart couldn't move, but it's a fairly snug fit anyway.

Note: This is the Jap/European carts. For some reason the US ended up with a completely different looking SNES and carts