Get yourself and old windsurfer boom, old steel frame road bike, some bits and bobs and there you have it. A tidy bike trailer for kites, kiteboards and other bulky items.
Here is my $70 kite buggy (converted kid carrier). I go to Rotto for 2 x 1 week holidays/year so needed a trailer that would pack small and be able to get my kite gear around the Island.