I use Avery type labels, similar to these....
https://www.officedepot.com/a/products/2718411/Avery-Glossy-Labels-With-Sure-Feed/
Amazon usually has no-name (ChyNah) brands for a lot less, that work fine.
Thanks!
I ordered these for starters and they’ll be delivered on Thursday so I can print them up quickly, on site!
https://www.amazon.com/Premium-Label-Supply-Sticker-Square/dp/B0BRQR2MY6
Oh... I could stick these on lamp posts, construction areas, on graphiti, garbage can lids... NYC is an oyster! Should be fun!