If you're got kids that are getting bored from being indoors because of the cold, Groupon has a couple of deals that'll keep them occupied. The first is a deal for 60% off at Kate's Skating Rink (multiple locations). They have a few different offers - some including tokens. The next deal is for 60% off at BounceU - an indoor inflatable playground where kids bounce in inflatable houses, slip down slides & traverse obstacle courses.
Click here for the Kate's Skating Rink deal
Click here for the BounceU deal
If you haven't see the Charlotte Daily Deals page, check it out! I have dozens more deals listed from Groupon (all at least 50% off) for Charlotte area dining, activities and more. I've also got deals from other sites similar to Groupon.