Safe Toy making supplies?

[Zumaria]

I've just discovered the oriental trading ipad app and I've put together a list of things I'm going to get Jenga for belated Christmas. However, a few things I'm not 100% on and was wondering if anyone could shed some light on the following:

Pheasant Feathers (100% natural), I was going to put pony beads on them and hopefully it will help Jenga's need to preen!

Bottle Corks - I believe they are plastic, but either way, cork or plastic safe not safe? I think plastic would be better than cork.

Thanks in Advance!