I tried out a pin and made worms!! It was fairly easy and fairly life like. I did change the recipe and subbed out the standard prepackaged Jello mix for gelatin and juice concentrate to get rid of the sugar for us.
Here's my version of the ingredients:
4 (¼ ounce) envelopes unflavored gelatin
2 cups frozen juice concentrate (I used apple-raspberry) plus 1 cup water, bring to boil
100 flexible plastic straws
1 tall slender 4 cup container (I used an empty OJ carton)