How to Make a Geometric Succulent Terrarium DIY! Learn how to make your own geometric succulent terrarium with recycled materials! This fun DIY is inexpensive and you might have some of the materials laying around already. Can you tell how I made this!? I bet you can't guess. It was a lot more work than I anticipated. Maybe there's a better way...if you think of one, let me know in the comments! You will need: Rotary cutter and mat Old CD CASES (didn't see that one coming, did you!?) Stained Glass foiling tape in copper You'll also need hot glue/gun and some pliers. This terrarium is a dodecahedron...a 12 sided shape. You'll need this pentagon pattern. Print it off your desired size. You'll need 11 faces...one will be open. 11. That's not as easy as it sounds...but it's cheap, right!? DIY's are sometimes more work than just buying it. For the 11 that I got cut the right shape, there was at least 13 that didn't work...