Guest restroom trays should look like this, not filled with a travel size pharmacy of what-ifs. Suggestions
for a beautiful and useful tray include:
A good quality candle: Tatine's Wild Honeysuckle, Saipua's Cedarwood, Geodesis Tuberose.
A bottle of light fragrance like 4711.
Individual packs of Advil or Aspirin.
Lots of heavy, folded paper towels.
A nice handsoap.
Armenian papers and matches.
And, of course, fragrant flowers.
Try to find pretty wrappings and bottles for your items.