I'm using meshed ketchup cups right now,should last them til around L4,seem to be doing fine,the ones you sent have already molted to L2 in them,I was maybe going to add in one tiny stick in each though,once they outgrow these I'll just use normal sized cups with lots of sticks and also mesh,one thing is that they don't stick very well so i suggest lots of climbing objects for them to get to the top either way,but even in the plastic they seem to be doing ok. I'm lamping the babies with a night time lizard bulb 24/7 as thats what I did when i had them last year above L2 and had no issues,I'll start using a day bulb as well when they are L4+,I just wasn't sure how much heat the nymphs could handle as L1s lol