Print your own codes.
A code is just something the app can recognise again. You almost certainly own one already — and if you want a proper sticker, one A4 page is all it takes.
First: you may not need to print anything
Any code that stays on the object works. The barcode on your dental floss, the EAN on a vitamin box, the QR on a shampoo bottle, a loyalty card, a parcel label — scan it once in Enforso and it becomes the tag for that reminder.
The same goes for NFC: a transport card, a hotel key, a ski pass, a work badge. Printing is the option, not the requirement.
the printed EAN barcode
the rating sticker the maker already put on it
transport card, hotel key, work badge
If you do want a sticker
Two ways, both fine. Enforso does not care what the paper is — it only has to survive where you put it.
Print at 100% — no "fit to page" — or the codes come out smaller than the sheet says. Matte paper scans better than glossy under a kitchen light.
Templates
Four sheets, all free. Start with the mixed one, try the sizes on real objects, then print a full page of whichever size you actually reach for.
Each sheet has its own numbering band, so codes never repeat between them — print all four and nothing collides. Reprint a sheet and you get the same codes back, which is what you want when one peels off.
Pill boxes are a special case
A weekly organiser is not one reminder, it is twenty-one: every compartment is its own dose on its own day. So it gets its own generator — pick the box shape, the doses per day and the day-parts you actually use, and it lays out a sheet that matches your box, compartment for compartment.
You do not need a special box. Any organiser from any pharmacy works: print the codes, stick one face-up on the floor of each compartment, and scan the master code once to set the whole pill box up in the app. From then on Wednesday evening can only be closed by Wednesday evening's compartment — no more "did I take it or not?".