I may be one of the last people on the free QR code train, but in the even I'm not—
You can use Google Chrome to create a free QR code.
Go to the link, go to share, and go down the options, select QR code and there it is.. Not $35 a month from a paid service.
I took one into CANVA and made this (as an example) putting it on a navy background, giving it a pale blue background and putting the place it leads to.