Crafted Beer & Co., in Maji Square: a great newish place for picking up different microbrews, both imported and local - and good to see that they're trying hard to push the increasingly interesting local microbrew scene. You can get six-packs at a discount, and they've also got a small bar where you can get stuff on tap.
Home page: crafted.tw
Hours from Facebook: Closed Mondays; Tuesday to Thursday 2pm to 10:30pm; Friday 1pm to 11pm; Saturday 11:30am to 11pm; Sunday 11:30am to 9:30pm.
If you haven't been to the Maji Square area yet, I strongly recommend looking around - fantastic concentration of non-Taiwanese food, with open-air yet shaded tables. Ok, so those tables are still kind of hot at this time of year, but most of the restaurants have air-conditioned interiors as well. It's right beside Yuanshan Station, where the Flower Expo was and where the Lantern Festival is usually held. There's a big crafty market area. If you happen to be someone who would rather sit with a beer and people-watch, while your spouse shops (not that that could ever apply to any couples!), it's a great destination.