I’d go with the spin cast as mentioned with acheap ice buster slip bobber. You can get set up for under $15 bucks per kid.
You will inevitably see tangles a spinning reel, and hand lining is tough for young kids to get right. Slip bobbers are the best for young kids to actually get hooked up.
The idea mentioned above (walking to you) is a very good idea and effective, but I’ve found getting to fight with a rod really gets kids excited.
Just my experience with my now 5 year old. Not sure what age range you’re looking at.
Kids love tip ups as well if they’re old enough to get them hang of hand-lining. They can mess around a little and don’t have to stare down the hole and get bored.