I posted this on a different thread, but these are the ones I would be most excited to see:
Battle of the Bands
I've been keeping my fingers crossed for this one for a good bit. I think it has a lot of potential for exciting pet designs and items.
I would especially like to see some of those funky electric guitar designs, but it would also be a good opportunity to add more equipment like amps and drumkits that I don't think we have on the site.
I think 80s hair metal would be fun for clothing and wigs, and KISS-style makeup might be good too.
Even though rock is a staple of this kind of event, I think it would be more popular with users other styles are represented, like K-Pop, rap/hip-hop, even barbershop quartet.
Artists like Lady Gaga and Elton John can probably provide some solid inspiration for campy costumes as well.
And I think iconic accessories like Michael Jackson's white glove, John Lennon's glasses, etc. would be safe from copyright infringement and would be fun easter eggs to include.
Wild West
Areas could include the saloon, county jail, a train station. Characters archetypes of the Sheriff, Mysterious Stranger, and Outlaw could easily work for the NPCs. As for the issue of guns, I think that could be avoided by replacing them with something silly like bananas or something gimmicky, like having a pea-shooter literally shoot peas.
Bandanas, vests, cowboy boots & hats would all be really fun clothing items. I think horse enthusiasts would also be happy to receive high quality saddles and other horse-riding accessories. Having wanted posters as items would also be fun.
Tanabata Festival
It doesn't need to specifically be the Tanabata Festival, I think any Japanese-inspired summer festival would work well. We've done ancient Egypt already, and I think many users would like to see Japan represented as well. The Meiji and Edo eras would probably be good to base it on, since that's when samurai were active (I think), and the armor has good item potential. Additionally, traditional dress like yukata would be good to include, as well as staple festival foods like taiyaki, takoyaki, grilled squid. Room items like shoji screens and hanging picture scrolls would also be nice to see. And fans.
I think traditional Japanese art and textile design, as well as folklore, would be excellent sources for pet design. It's something that I would definitely look forward to.
Victorian Era
I admittedly don't know much about this era, but its fashion is certainly well remembered. Those piled-on wigs and elaborate dresswear would be cool items to have. The wigmaker's, tailor's, and cobbler's could all be areas where free items are released as well as tokens exchanged. not zinnia's idea of a masquerade ball would also fit well here. The plot could also involve a Sherlock Holmes character that needs the player's help to uncover a mystery. Perhaps the prime suspect is attending the ball? It might be fun to make all the NPCs have slightly suspicious activities/backgrounds that are intermittently revealed to keep everyone guessing who the suspect is.
An Olympus event involving ancient Greece & its mythology could also be really fun! I don't think the site has many pets based on Olympian gods and goddesses, so I think there's a lot of potential for this one.
sorry for so much text