Have someone help you remove the decorations before bed.  Spray your hair with hairspray.  Band any loose hair into a ponytail and flip any braided tails onto the back of your head.  Wrap your hairstyle in a silk or satin scarf or stretch a pair of nylons over it.  In the morning, smooth your hairdo with any styling product.  It should last you two to four days.  Enjoy!