Rub your canvas shoes with wax to keep them dry in the rain.
Use nail polish remover to get difficult stains of your shoes.
Wash your jeans inside out to prevent them from fading.
This is also a good idea to do when washing clothes with details.
Spray hairspray on your tights to prevent from running.
Rub your leather bags with a thick creme to keep the leather healthy and the bag looking new.
I usually use the classic blue Nivea creme, which by the way is also amazing for those cold winter days where your skin tends to dry out.
Paint the insides of your fake rings with nail polish to prevent green stains.
If you get foundation or powder stains on a white shirt apply shaving foam to the spot.