New Chin owner here

(Paranoid Chin Owner at that!

)
My question is: What are some good, safe toys for chins? I read somewhere that bird toys are good but I would be scared that he would chew the plastic and it would harm him?? I have also seen pics with toilet paper rolls, string, etc in the chins cage to play with. Is that safe for them to chew on??
Right now, all Pikachu has in his cage to play with is his wheel (which he hasnt learned to use yet because we just got it about an hour ago) and some chew blocks. Any help is greatly appreciated. Thank you!!

P.S. do the chins really get on them chin swings? They look like they would be too narrow for the chin to "swing" on?