I just spent an hour reading random jello recipes, and got frustrated because i didnt have the right ingredients for any. so i got creative, and got lucky. here's what i did:

blended 2 tbspns of full fat "whipped" philly cream cheese (60 cals no carbs) with a couple drops of lime juice and two packets of splenda, a couple drops of s/f vanilla
made strawberry jello as normal, blended them together on high for three or for minutes (i used 1/2 c crushed instead of 1 c. cold water), threw it in a little square pan in the fridge and had an awesome, tangy, creamy concoction in about 30 min!

i did this cause i didnt have sour cream, heavy cream, and im on induction so i have to be picky...