Put samples of shampoo, lotion, conditioner, & other toiletries in a glass container & put in guest bedroom when you have overnight guests. Also perfect to store the samples you have lying around! More guest room ideas on this site!
DIY coffee-scented candles pour beans (the cheaper, the better) into a small glass jar; just leave a quarter-inch of space on the top, then nestle a vanilla tealight in snugly. smells like a fresh pot of vanilla coffee — even after the candles are out.