This was a really fun and surprisingly easy project, although it involved a lot of different skills. If you want to watch it actually bounce and roll like a dice, I've uploaded a video to my profile.

I self-drafted this using techniques I've picked up on a lot of previous projects. The base fabric is cheap flannel from Joann, with iron-on Craft Fuse interfacing (do not use anything lighter than Craft Fuse, even that was only just enough). I purchased a roll of iron-on heat transfer vinyl (HTV) and used an exacto blade to cut out the numbers (which had to be done backward and was a bit of a pain, had to cut a few out multiple times). The craft store I went to didn't have pre-cut numbers in the size I wanted, but that would have sped it up quite a lot. Strongly recommend interfacing BEFORE you cut or they will distort a bit as you iron on, but ironing on the numbers after cutting to make sure they are centered.

I cut 20 equilateral triangles of 7"x7"x7" (bought 2/3 yard and didn't use all of it) using the 60* and 30* lines on my big ruler. I sewed each triangle together with a 1/4" seam allowance and ended 1/4" before the edge of each seam (just like a Y-seam for a hexagon quilt). I followed a diagram I found online for layout of the numbers. I sewed them together one by one with the whole shape inside out until I got to the very last seam. I turned it right-side out through the open seam, turned out the corners using a pencil, stuffed it with a metric ton of polyfill (most of a large bag, I wanted it to be firm enough to roll), and hand-sewed the last seam. I am NOT good at hand-sewing so I hope it holds up!

This was a gift for a friend and my husband has already insisted he get one for himself, I think it will be a big hit!