Use a leftover case to store any of the following items.
Petroleum Jelly & Lotion - Store a dab of lotion in one side and petroleum jelly in the other side for dry hand and lip relief on the go. Lens cases are leakproof, so no mess at the bottom of your purse!
Earplugs - Store earplugs, one in each side, and never have to fumble in the bedside drawer in the dark.
Pills - Pack a set of your daily meds and put it in your purse just in case. Or use it to carry emergency meds, like Tylenol, Benadryl, or Imodium.
Earrings - For those days when you forget to put some on before you leave the house. Pack your favorite small pair in a case and slide it in your makeup bag or purse.
Shampoo & Conditioner - when you just need one night's worth of toiletries, squeeze shampoo in one side and conditioner in the other.