Honestly crickets can be alittle bit nasty. Ived seen ones try to take a bite at my frog a long time ago. Though I didnt leave any food for the crickets.
At the same time Iam currently keeping PINHEAD crickets in a small terrarium with two 1 inch toads and I left some food for the crickets. The only thing they do is just crawl over the toads. But that may be bad? There wasnt alot so it may have been that. I only poured in 2 dozen of them. Half of which got eaten quickly. The rest are gone now and tommorrow Iam due for some crickets.
I have read reports here about how crickets bit their frogs. So I personally dont know about that. I think that the pinheads are less offensive than the adults though. In any case Id just make sure you give the crickets some places to hide, food, and water. Food for crickets can be powdered reptile foods mixed with fish flakes(tropical), and some veggies and oats. As for moisture you could leave pieces of cotton on a small cap and pour water on it. Theyd drink moisture from that. YOu could also use sponges if you have some. Just like a hermit crab in the sense they sometimes drink from a sponge.
I may be wrong so Id wait for others replies.