Bath bombs for the shower? Yuzu Soap's shower tablets promise to scent your shower if not your person: "To use, place one tablet on the shower floor or bathtub edge in one of the two corners closest to the water stream (but not directly in the water stream). Drizzle water onto the tablet to activate. As the tablet fizzes, the essential oils will be released into the shower. For best use and to help prolong the scent, it is highly recommended to place the tablet in a small dish (so the water doesn’t drain immediately after activating the tablet)." (Not surprisingly, they also sell a small square dish for that purpose.) Available at Anthropologie in Lavender Sage or Verdant Variety (3 each lavender sage, eucalyptus mint and orange mint), $26 for 9 tablets. If you buy directly from Yuzu Soap, you can also find Lemon Tea Tree, Rosemary Lime and Bergamot Lime.