Any Lake Tahoe tips for an enjoyable visit?

Traveling to Lake Tahoe this Memorial Day weekend starting on Friday! Can't find anything online to do. Any suggestions? Something that is not touristy! I hate that stuff. Oh yeah, I'll have my two dogs and my partner. We always stay at the same place. Very cheap, but very clean and newer, near the lake down a couple of blocks from stateline, but we will have a car. Too cold at night for outdoor stuff and can't afford concerts....like the Killers that are playing there that weekend....for $65 a piece for tickets. Need some creative and inventive ideas.