Stackable cover and support for Euro Coin Organizer

I use the "euro coin organizer" by tmssngr and I needed a cover to prevent the coins from falling when it is full, so I designed this thing.

It serves as a cover to prevent coins from falling and allows to stack several "euro coin organizer" in a safe way since each lower part fits with the upper one.

It works for the "euro coin organizer" by tmssngr https://www.thingiverse.com/thing:532562 and for my remix "Euro Coin Organizer for 5ct, 10ct, 20ct" by Cuiso https://www.thingiverse.com/thi