I’ve had good results with cheap gadget flashlights. Small is good, so little fingers are willing to carry, cheap is good so I don’t mind when little fingers leave them somewhere, and low powered is good so little fingers aren’t constantly blinding people.
Our local hardware store had this one that just worked:$4.99 before pandemic (so $20 plus tip now?). It was rectangular not much bigger than the three aaa’s that powered it. Small edge projected a beam, big edge lighted an area, back had magnets and hook. They never lasted very long but fit nicely in a pocket and covered all needs.