The KOB Channel 4 Health Fair is on the 23rd and 24th. I saw an ad on a bus yesterday that said there are free bike helmets for kids. So, if you need a helmet, you can go and have fun, and get one for less than it costs to buy. Just save one for me!
Kids under 12 are free. Adults are $5, but you can get $1 off at different spots around town. The KOB website has a link to the data. (parking is $4 too)