I'm not saying it doesn't happen, but I can't think of a single one of my kids story books that has ads. "Bear stays up for Christmas," "llama llama nighty night," and "if you give a mouse a cookie" amongst several dozen more come to mind that I don't recall anything resembling an ad in.
Shows, yes, all the time.
Physical therapy if you have any physical issues at all, massage therapy if you have any chronic pain, occupational therapy if you have specific life skills or mobility needs.
Any preventative screening or vaccines. There are various generic cancer screenings, etc. Get a referral to a dermatologist to do a once over your skin and document any spots of concern.