Tan athone goes down well. See if you can get your local pub to support it, mate of my daughter had a charity day, her's was to support a oap home but it could be done for any charity, raise your entry money and any over goes to the same charity.
She had face painting, pub games bouncy castle, I did nail treatments, in the evening there was a full body wax with 4 waxers working on a very hairy biker. All day long there was spray tanning in the pub garden, for some reason people love to stand around and watch people getting tanned. And a jive competition, best dressed and best dancers.