Double Deer Factory
If you are a foreigner, you can wander around the Double Deer Factory. There is some amazing machinery, such as the one that sticks on the labels. You will likely be thrown out after a little while, but it is well worth it. Try not to get your pictures deleted. If you are pretending to write an article about the brewery, then you should have business cards made beforehand.
Pool Halls
There are many pool halls dotted around Wenzhou, ranging from free to ¥30/hour. If you wander past the security guards and get to the 4th floor above Times Square there is a pool hall you can use pro bono.
Teach English
Schools licensed to employ foreigners to teach English include D.D. Dragon, Dr Mike's, Kidâs Castle, English First and Web International English. Always inquire about a Z-Visa and check that the school has a license from the local government. There are many unlicensed schools, some of which provide a good teaching experience but your passport might not bear up to scrutiny. See also Teaching English and China#Work.
Taxi rides
Taxis are cheap enough that you can just get driven around for an hour or so and not be out too many dough.
Learn Chinese
As a very Chinese city it is difficult to find English speakers outside of universities, colleges and certain bars. For this reason, Wenzhou is perfect for the home learner to practice their Putonghua out on the street. Watch out for Wenzhounhua though, it sounds incredibly different from any Chinese you have ever heard before.
Go to the Zoo
They have penguins, fornicating lions and the occasional panda. Good times.