Hi all, I'm just starting out with my Lego collection. Currently own ewok village, pet shop, yellow submarine and a few London buses (couldn't resist then in the Leicester Square shop) Please could I get some advice regarding challenging builds that cost approximately £50. I want to use Lego as a team building exercise and wanted to know what your suggestions would be regarding sets that could be suitable. I'm planning on having 3 teams, building 3 different sets swapping pieces before the event meaning the candidates would need to negate between themselves Thanks Paul