When you send a file to a designer or a printer, consider renaming it so the filename is relevant to the person you’re sending it to, rather than yourself.

Filenames like “my-business-cards.jpg” or “website-modifications.doc” can easily get lost in the shuffle if the recipient doesn’t catch the file and rename it quickly, and it’s hard to do a search for if it’s gone missing, or if an old file is required years down the road.
If your name is Mary Juana, think how easy it is to search and access a file named “Mary-Juana-website-updates-june-20-2006.zip”.