General tips. Whenever possible, introduce yourself and ask permission. If this would be an establishment’s only display, then it’s probably not a good fit.
Cafés, restaurants, or bars which already have established community-oriented flyer/literature spaces.
Barber shops and hair/nail salons.
Laundromats and car washes. Notice a pattern here?! :)
Anywhere with a waiting room. Doctor’s/dentist’s office, acupuncture, massage.
Your local public library. They usually have established community-oriented flyer/literature spaces.
Apartment/condo building lobby
Use your imagination! The above is not intended to be an exhaustive list.