found a HP L7780 printer in the trash. Well, in the hallway really. The power button fell right out of the front panel. I thought it was a hard plastic button that just needed to be glued back to its supporting thing inside the panel. But turns out the button is soft and the thing inside is a membrane. (Don't know what else I thought it could be!)
Is there an adhesive for that kind of material?
Otherwise I'll just mash the little dome on the PCB with a pen or something.