I get mine online too, there's a user on here called fluffers who sells them, if you have a look in the selling section. Only reason I mentioned it is because loads of places sell apple sticks as chews.. And mine have zero interest in them [emoji38] the proper fresh ones however they go mad for! But yes off trees [emoji38]
You've not had her very long at all, I really wouldn't expect her to be okay with that much handling so soon tbh! Some buns don't tolerate that anyway. You can use herbs and veg as treats too, and forage. I'd let her come to you tbh, and offer food and not pick her up.
I've never really found that buns play with toys, with the exception of a tunnel and things to jump on and off of and one of mine likes the natural willow balls.. But only coz he eats them [emoji38] Apricot likes Evelyns stacking cups though she chucks them about [emoji38]
The science selective loops might be a good shout though for feeding treats, there's a few flavours, mine liked them all [emoji38] some say they're for guinea pigs but on the back say they're suitable for buns too, I used to buy all the flavours xx