I use some really thin ( 1/2 mm ? ) fiber optic cable left over from my model train days , on my display models that stay on my shelves . And I use 0.8mm Plastruct plastic rod on my game vehicles . I drill a hole in vehicle and insert antenna , no glue . Mostly they pop out if you snag them , and if they do break , it's easy to fish the piece out and replace . With about 10ft of rod in the Plastruct pack , I've got lots of rod to make more .