I use a unique number for all of my devices. I just started at 1001. I put that number in Jamf School Asset Tag field. I then use the Avery 61526 label, they stick tight and can be removed and placed on a new device if I replace a broken device. Then, I just keep my inventory in a spreadsheet. That allows me some extra cells for notes about that device, along with the current user.

I use the Avery silver labels. Silver Heavy Duty Labels | Industrial & Security | Avery Australia (averyproducts.com.au)

Found a size that works for what I want, put the school logo and name on it, plus a barcode and the asset tag.

Went with 'T' for Technology, so that I could use it for iPads, monitors, desktops, laptops, etc...

They stick extremely well, compared to the labels we used to use which were designed more for books.

I started with T00001, currently up to around T00250

Awesome, thank you!