If it's easy for you to get 4mm coro and not the gutterpipe, you can just make fuses out of coro. You can probably find the instructions here, but there's a "how to" over on spadworld.net about building coro fuses. You want a quick and easy build, try an FNS. To me, those are loads of fun. No ailerons and no landing gear so they're a super quick build. Even with no ailerons they're extremely agile and will bite their own tail.
Looking forward to your pics.