Best blue Jell-O shots for denim party?

Some friends and I are going to a denim themed party in a couple weeks and we’re pregaming at my place. I love Jell-O shots (and kinda like making them). I’ve done the average blue raspberry jello + unflavored vodka before, but I was wondering if anyone has a blue Jell-O shot recipe that’s a bit more adventurous. I also have unflavored gelatin powder too, so doesn’t have to be a gelatin flavor