Here is something I like to do sometimes, to make a cool punch! Its pretty simple, I use cherry or strawberry drink mix, 2-3 packets per gallon.(3 for a stronger flavor) and I sweeten it with a simple syrup instead of just sugar, and sometimes I'll dissolve a black cherry jello mix packet in it to really thicken it up a bit. Not enough to make real jello out of it, but just enough to thicken it for blood consistency. Its been awhile since I've made it, I can't remember the exact measurements of jello I used that got the best results, you can just experiment with it. But its a really cool way to make drinkable fake blood!