My dc's 2nd birthday is fast approaching - we're having a small party for about 6 children aged 1.5-2.5yo. Was just planning a couple of hours of toys, food and party bags and balloons to take home. Is that enough at this age? 2yos don't do party games do they? Really want to keep everything quite low key but would hate to look like we hadn't made an effort! What's the right balance?