At your local library. This is a great way to support the local library-- and you may walk out of there with an interesting book to read.
At office supply stores like Staples and Office Depot. These giant retailers will never run out of printers or ink for your projects. In fact, there, maybe you’ll decide to purchase a printer of your own.
At shipping companies like UPS and FedEx. These stores have every paper-size and cardboard box you will need. They also have a fine supply of printers at your disposal.
At your hotel. Typically in hotel lobbies have computers and a printer available for use. This is a great spot to do some printing- but check in with hotel staff before you do this--- especially if you aren’t a guest.