Oh here we go, Eau Claire is my hometown. If you haven't been there yet the Leinies brewery in Chippewa is pretty cool. Otherwise I'm not sure if you want places to go or beers to try so I'll geek out on both.
Establishments
The Fire House - Essentially El Bait Shop light. I think they are around 60 taps or so and usually you can find a lot of Wisconsin beers that are somewhat uncommon, along with a lot of other good stuff.
Modicum - Newer brewery in Altoona. It's small but everything they do is really good. I recommend Archetype (Dark Ale/ almost Stout), Terra (wet hopped from their own farm), and I've heard really good things about Leafless (lager fermented with local maple syrup) but I haven't had it yet. Not bottling anything yet to my knowledge but get a growler.
Lazy Monk - You can usually find this in grocery stores. They stick very true to German beer styles. I don't know that much will wow you with ingenuity, but everything is pretty good. Not a bad taproom either if you pay it a visit.
Eau Claire Brewing Projekt - Located downtown by Lazy Monk, it's basically the exact opposite. Their Gun Powder IPA (West Coast IPA with green tea) is pretty good, and about the most normal beer they have. They will do a lot of different stuff in very small batches. If you feel adventurous go here. I think they sell 4 packs of cans in grocery stores.
Other WI Beers
These all should be readily available in grocery stores. Your best bet for variety and price in EC are Woodmans, Festival Foods, and the Coffee Grounds.
Ale Asylum- Located in Madison. Everything they do is really good.
Karben 4 - Another Madison one Fantasy Factory is their flagship.
Sand Creek Brewing - Out of Black River Falls (about 1/2 hour south of EC). Oscar's Stout is really good. I was there a couple weeks ago and had a Scottish ale brewed with elderberries it came in at 11% dangerously good. They also have some hard lemonades that are good for the ladies if you need that.
Capitol Brewing - Makes a beer called Supper Club. It's really easy drinking in between those heavy IPA's. Think Spotted Cow but less hyped and better tasting.