balsa wood

Hey! I have bought a few chunks of natural balsa wood. To make this more interesting to my 10 cockatiels in my aviary I am going to sting them together, i also want to dye them to add attractiveness. Any opinons on how or what i should use? i was thinking food dye? :grey tiel::pied::wf pied::pearl:

Hello all, I've seen some people say they've made toys out of balsa wood from a craft store. However, at my local craft store the balsa wood has a very strong odor of glue. Is it still safe for birds? Does balsa just smell like that? Thanks!