I have a checklist people use to complete a list of tasks from an excel
spreadsheet, and i just have brackets like [ ] on the excel sheet. They
print it out and check things off with a pencil and keep hard copies.

I'd like to make it so that I can have checkboxes there instead, so they can
open an electronic copy of the file, click checkboxes as they complete tasks,
then save it for record keeping, rather than using hardcopies. Is there a
simple way to create checkboxes in cells?