Ideally, download a PDF copy of the flier, and print using 28 pound paper. If you are paying to have the fliers printed, ask for a discount.
Make a few large copies of the flier as well. These can be put inside car windows / back windshields.
Always ask permission before hanging a flier. Remember to bring your own tape.
Suggestions of places to hand out fliers:
Start at the place of last known location, then work your way out concentrically from there
Drive through restaurants - ask them to post it where the drive through workers can see the flier
Cheap hotels - give to the managers in case it is a human trafficking abduction
Take fliers to your local fire and rescue stations, and have them post them in their buildings for different rotations to see
Get in touch with local radio stations (big and small) have them mention the missing person and see if they can post a flier on their website
Attend a local event (festivals, sporting events)
Street intersection hand out with police escort
Lyft / Uber drivers
Airplanes (back of seats)
Pizza companies (tape to boxes)