Here's what I have

Sugar Free "Jello"
shared by Email address deleted per board rules, but if you want to know, pm me and I will give her credit

I make my own with Splenda, gelatin, and unsweetened Kool-aid mix.
You can get those small snack size plastic bowls with lids (like Glad
or Zip-loc) and make your own snack size treats.

2 pkg any flavor koolaid, unsweetened
3 packets knox gelatin
4 cups water
1 cup Splenda

Put 2 cups water in pan and sprinkle gelatin on to soften. Add
koolaid and Splenda. Turn on heat and bring mixture to a boil. Take
off heat and put 2 cups cold water in and mix well. Put in bowl or
mold and let set.