Twigs (Parsnipbun on here) sells natural willow sticks. There's a thread in the Items for Sale section. The proceeds help the bunnies in her sanctuary. My rabbits love them, they are fresh and much nicer than the dried sticks you buy in shops.
Fluffers sells apple sticks to raise funds for Honeybunnies rescue, again in the Items for Sale section.
I refuse to buy from PAH too, I despise the company. I buy some of my toys/treats from The Hay Experts. They have a loyalty scheme where you collect points and if you wish you can then donate these points to a rescue.