Just print without supports.
The design links right into the bluetooth-programmable chinese name tags which have a safety pin on the back at the top.
e.g. https://de.aliexpress.com/item/1005004911298386.html
The printed tab slids right under the safety pin then:
The design is inspired by the billboard-business-card-holder
OpenSCAD source file is included.
The author marked this model as their own original creation.