Best/favourite snaks for on the bike

I'm setting off on a longish tour of the Netherlands in a week or so..

i just wondered what is everybody's preference or experiences with snack food to eat on the bike ?

i have suffered the dreaded bonk a few times on long runs and i have read its a good idea to eat at least once every hour (as well as keep rehydrated, which i am better at).

does anybody have any tips - popular foods ?

(i will probably be using a small top bar bag and usually carry a banana) Smile