We were able to put some scrap vinyl to good use yesterday and visit my 90 year old Grandmother as well.
First of all, I love this idea and I'm totally stealing it. Second of all, I am going to one-up you and offer this to anyone in my community that wants this for their kids. Besides being a cool thing to do, free stickers is a great way to build good will which could also pay dividends when this apocalypse is over! If you are printing anything else, and you have a solvent ink, make printed ones and pump some ink through those lines.