There are more frog-themed goods than you can shake a stick at lining the walls of this very specialized retailer. Tiny collectors-edition frog figurines are the biggest sellers, competing for frog-lovers' attention with coffee mugs and glasses, handkerchiefs and hand towels, slippers, oven mitts and myriad other household merchandise.

Frog plush toys in various sizes and shades of green are perfect for younger amphibian enthusiasts, while the frog incense and fragrance packets would certainly make a unique gift. Although frog shops now seem to be popping up all over Tokyo, Cave was a pioneer in the field, established way back in 1998.