nut free kids party questions

just after some advice after one of the kids invited to DSs birthday party has a peanut allergy.
We are having the party at the pool so I was just taking lollies and was planning on buying them some hot food there.
The mum said they give him trace foods?? and he has an epi pen(she will give instructions)
I was planning on making lolly bags...is there anything obvious I should stear clear of or are lollys pretty safe?? :dunno:
sorry if I sound clueless I just dont want to make any mistakes

You need to read the packets as many companies put that there are traces of nuts to cover themselves. Sounds like mum risks it with them which is unusual if he is anaphylactic.

thanks mrsmac :)

Maybe instead of lolly bags it would be safer to go with goody bags.
Pencils/crayons, stickers, bubbles, glitter, post-it pads, plastic animals etc.

Mums who try to keep the junk food intake down would thank you too.