My 10 years old child had a great Lego Bionicle Birthday Party this Sunday. The party lasted for 2 hours, we had 11 guests 8-10 years old. We bought 15 Lego Barraki sets (to allow more choice, and will return the unused boxes), and for the first 50 minutes the children were building them and were playing with the built bionicles (don't forget stickers with name tags on bionicles, boxes, mats, etc). I think the hit of the party was Zamor Sphere Gun, which we bought in Lego store for $20. We put all the built Bionicles in one line, and the children shot 6 Zamor Spheres each, competing who will hit more Bionicles. The winner got Bionicle mask and 2 Bionicle claws (from Lego Store). Then it was time for pizza and cake (we ordered in Stop & Shop cake with Bionicle picture, printed from one of the web sites), and just before the end we had a guess how many Lego pieces in the box" game. We put in the box a $5 40-pieces Bionicle set and the child who gave the best estimate won this set. Each child took home the Bionicle that he build.  Hope you find this useful."