My friend made this 8 years ago. The buttons were placed in a bowl and glued in place with PVA adhesive. It’s clear plastic spaces have now turned white over time. A few buttons broke off the edge of it but it’s still substantially the same.

It’s in the bathroom near the window but it’s managed to last all these years. I wonder how much longer it will be around, I might give it to another friend to use as a source of buttons if it starts to deteriorate. Only time will tell.