I organized an "ice-cream Party" for my daughter. She is 14 and her and all of her friends enjoyed themselves and they've asked to have one this summer. To start with I bought loads of Ice-cream the night before and stored it in the freezer. I put a massive sheet/mat in the garden and when they arrived they watched a film and then the "Ice-cream Competition" began. A timer was started and they began eating the ice-cream. The last person to still be eating ice-cream won a prize. Then they all played on the trampoline that my husband and I bought her for Christmas last year. Then five of her best mates slept and they watched the other movie that I had rented out for them. It was a scary movie as she had asked for that. When they left in the morning they were given a party bag filled with nail varnishes, Make up, Chocolate and other toiletries. It does cost between £75 and £125 but it's really worth it as they have so much fun. My daughter has not stopped thanking me for it and she has asked for another this year!