Beavers find lego car parts hidden and using insctruction sheet rebuild the car
Small/cheap lego cars, bags 2 per car
Place parts for each car in 2 bags labelled ie Ford/BMW etc and hide around meeting palce or activity area. Beavers are placed in small groups and told which manufacturers they need to find. Then when they have found the parts they need to make the car using the instructions provided. Award points for accuracy etc. Cars can be raced to find the overall winner.