Goal and options: What can I use to hold slivers of bar soap and make them usable?
output answer: Use a length of pantyhose cut to about eight inches. The material is porous and allows the soap to gradually come out on your skin.

Goal and options: how can I use olive oil for my hair?
output answer: Avoiding the scalp, coat hair with a glob of coconut oil an hour or so before hitting the shower. The oil protects each strand from drying out while you shampoo. Rinse the oil from your hair after shampooing and apply a conditioner as normal

Goal and options: How can I paint a design on my fingernails?
output answer:
Take the thinnest paint brush you can find and dip it in the paint then slowly drag it across the nail to create whichever design you please.