Yay! This a crocheted 20-sided die, for those who aren't familiar with the nerdy vocabulary. I made this for boyfriend for his birthday (and I'm only two weeks late this time!). I used the pattern found here:
It's pretty decently sized as you can see by my hand.
The triangles in the pattern are all made individually and then sewn together to make the die. I had no trouble with the triangles, but I would assemble them differently than given in the pattern. In the pattern it says to make four 5-sided pyramids and then connect them, however I found no geometrically possible way to do so (I'm sure I did something wrong.) So if you want to make this I would suggest making one of the pyramids and then connect all the pieces on individually after that, making sure each point is created by five triangles.
I used felt for the numbers on my die even though the picture with the pattern is shown with them sewn on. I did this mostly because I'm not overly wonderful with needle and thread. Plus it took about 5 minutes to hot-glue all of them on.
Overall I had a lot of fun with this pattern, and even more fun laughing at all my friends who seemed entranced with my crocheting.