Hi Brian,
Us Tv folks have always done wonders with broken plastic bits and copper wire - discovered eventually that snipped replacement Guitar strings are useful for those tacts that need some flex in the plastic.
Must admit that a recent nifty tip electric helicopter has got me going - feel that Balsa might be the biz and fortunately have a 'Hobbies' outlet in the next village.
Useful, as grandchildren are suspecting I can't fly a helicopter without crashing it - Chris.