I just enjoy the idea of shifters with less typical forms.
Actually, both were-spiders and were-sharks are fairly typical, outside of Western culture.
For oWoD sources, I'd recommend
Players Guide to the Changing Breeds as it covers all the non-Garou in reasonable detail (enough to use them effectively without including as much info as the eleven individual books). It includes: Ajaba (hyena), Ananasi (spider), Bastet (cat), Corax (raven), Gurahl (bear), Kitsune (fox), Mokole (reptile), Nagah (snake), Nuwisha (coyote), Ratkin (rat, duh

), and Rokea (shark). All the most common werebeasts from folklore around the world.
Ananasi- use blood instead of Rage (by spending blood, they can change form, gain extra actions, heal wounds, and create webs)
- have four forms: homid (human), lillian (humanoid-spider; or D&D drider-like), pithus (giant spider), crawlerling (hundreds of normal size spiders)
- their aspects are Wyrm (hatar), Weaver (tenere), and Wyld (kumoti)
- their Gifts are too varied for a complete list, but they do appear to have three or four factions
Rokea- fairly rare, especially on land; must return to the ocean to replentish gnosis (thus the land-dwelling rarely go far from the coasts)
- auspices: brightwater (warrior), dimwater (leaders/mystics), darkwater (curious/inventive, very rare)
- forms: homid (human), glabrus (shark-like man), gladius (humanoid-shark), chasmus (giant shark), swimming jaws (normal shark)
- breeds: homid (human-born) or squamus (shark-born) only
- most of their gifts are water based