Fruit (halved grapes usually)
Banana loaf or other home-baked bun/muffin type thing
Pom Bears if we're at a soft play that sells them
Raisins (so shoot me!)
Organix Oaty bars occasionally
I don't understand the outrage about snacks. I have a coffee and a biscuit mid-morning and usually something healthy to nibble on mid-afternoon to tide me over. Don't most adults?