A fun family-type Groupon outing (a Grouting?).  A speedboat tour of the lakefront with Seadog Cruises with your choice of three options:

Obviously the last option is the best deal and probably the most fun. What I like about this Groupon is that you can buy up to 8 of them, so the whole group gets in on the deal. No having everyone buy their own vouchers – easy peasy one-time purchase, split the cost.

Deets:  Expires Sep 30, 2011.  Limit 8 per visit. Valid only for option purchased. Reservation required 24hr in advance; subject to availability. Not valid on holidays or 5/28-29, 7/2-3, or 8/19-20. Not valid for Specialty Cruises. Tax included.

I don’t know how many of these Groupons are available, but I’d hurry if you have any interest at all.  It jumped 200 while I was typing this post…