郵市

邮 = 由 + 阝 : Maud Younger (y) received a postcard (邮) in the outhouse's kitchen (ou2). The postcard is from the imperator (阝) and shows himself enjoying a cuba libre (由). On the postcard he invites Maud to visit him in his holiday lodge.

市 = 亠 + 巾 : Mnemonic symbol: a supermarket.

Sherlock Holmes (sh) started a supermarket (市) in the space station's bathroom (Ø4), but all he has for sale right now are berets (亠) and towels (巾). He should have opened it at the beach!