6th Avenue Aquarium
425 Clement Street
+1 415 668-7190
M-F 11AM-10PM, Sa-Su 10AM-10PM
at 6th Ave
Small store selling aquarium supplies and fishes, but its small scale beats many public exhibits for fun and colorful fish.
Amazing Fantasy
650 Irving Street
+1 415 681-4344
between 7th and 8th
A comic book store, owned by a guy named Frank. Friendly staff. They have a small collection of back issues, and will order anything for you by request.
Green Apple Books & Music
506 Clement Street
+1 415 387-2272
Su-Th 10AM-10:30PM, F-Sa 10AM-11:15PM
at 6th Ave
Renowned independent book and record store dating back to before the Beat Era. Both used and new books.
Tutti Frutti
718 Irving Street
+1 415 661-8504
M-Sa 10:30AM-6:30PM, Su 11AM-6PM
between 8th Ave and 9th Ave
A fun shop with great gift items that range from "Worst Case Scenario" guides, to dictators-of-the-world finger puppets, to knitting kits, to Sesame Street T-shirts, to "nerdspeak" flashcards. This store has the kitsch you are looking for. Kind staff will ask you if you need anything.
Citi Shoes
751 Irving Street
+1 415 665-6112
M-F 11AM-7PM, Sa 10AM-6PM, Su 11AM-5PM
between 8th Ave and 9th Ave
Many styles from sneakers, to dress shoes, to stilettos.