There are thousands of sticky tapes, some designed to have no residue.
Here is one I’ve found for example [0], although a double sided one might “look more professional”.
Here is one I’ve found for example [0], although a double sided one might “look more professional”.
But for SD cards, I would expect affixing it to the inside of a cardboard sandwich with masking / painter's tape to be perfectly adequate, though not by any means pretty.