Last winter, when I visited my sister who lived in Italy their showerheads had fresh sprigs of Eucalyptus casually tied on. When you took a hot bath or shower, the steam made the fragrance amazing. Obviously I wasn't in Italy nor do I have a sister.
Make your own coasters- tiles, adhere picture/paper to tile with Mod Podge and let dry; Spray a coat of clear spray paint and let dry; attach felt pads to the bottom. Doesn't have to be beer coaster either!