I wonder how many people know that banks also keep blank deposit tickets in their offices, and you can also ask for them at the drive-through window.
You will need your bank account number, but at least if you're out of deposit slips, the bank will have them available. Most banks have an island in the lobby of the office that will have a place for people to fill out paperwork, along with slots that have various forms, including the deposit slips.
I mention this because people who have always had their checks on direct deposit and who use debit cars most of the time might not have had to fill out a deposit slip before. I work with some early 20s kids and had to show them how to fill out a deposit slip so they could put their bonus checks in the bank!