Congrats on the new adition, The book Ferrets for dummies is and life saver a must have for ferret owners.
I would NOT recomend apples/cucumbers etc ferrets cant digest things like that.
The best treats to give in small amonts is meat, cooked chickin is a fav, beef, etc and cooked fish they go mad for, if you can stomach it, raw rabbit,poltry, etc hole they will LOVE.
I wouldnt leave small toys in with her 24/7 just in case.
or collors on 24/7
also a great treat is ferretvite and ferretone.
Ky