Lady bugs, fire flies. And some wont give spiders because they can bite, and all spiders are toxic. Moths, butterflies, grasshoppers, crickets, (grey small little insects , dont know the name in english). They are ok. Some give them wasps but i wouldnt if they sting..
Fruitflies, house flies are ok.
But i would stick to feeders that are raised in captivity (no parasites).
E.g. Crickets, Hornworms, Super worms, Locust, King meal worms. etc