Hello @Kevin-s0,
I rent a double bed room, which isn't suitable for kids, in the house where I live.
The first aid kit just has various bandages, a small scissors and antiseptic cream and wipes. That is, all topical items, nothing that's to be taken internally. I keep a record of the "use by" dates and replace items a month before.
Guests have commented on the kit being a good idea and several have used items from it.
On the one occasion that someone mentioned headache tablets I referred them to the nearby pharmacy as I wouldn't want to be responsible for giving someone I don't know any tablets, even over the counter ones.
Steve.