Look up the safety for chem play so that you know the neutralizers if needed. Putting toothpaste all over a butt plug then coating it with black or red pepper really seems to do the trick.
Pick out 5 random safe items to fuck and use them all in pussy then in ass. The items cannot be sex toys and must provide a challenge in either length or width.
Guess how many ice cubes you can stuff each hole with. Then stuff each hole until it filled. For each count your off. Find a suitable consequence.