I saw this amazing tutorial on youtube from Black Magic Craft and I immediately knew I wanted this in my life. It probably only cost about $3 for the foam and everything else I already had laying around the house. If you wanted to make one the most expensive thing would be the clear water epoxy and you could use $1 5 minute epoxy like the BMC guy does to keep it affordable.
Definitely happy with how this turned out! Not sure when/if it will show up in our DND game but I’m thrilled to have made it.
If you want to make one too check out this link