do your own QR codes with real sats in a LNURL
I wrote several guides about how to do that, a simple LNBIts is enough:

• https://darthcoin.substack.com/p/orange-pill-bitcoin-tpos-atm
• https://darthcoin.substack.com/p/getting-started-lnbits
• https://darthcoin.substack.com/p/lnbits-saas-a-solution-for-schools