You might do a block that looks like an ekg. Maybe embroidery an ekg complex. That would be cool. If you could get a copy of one of your own ekg's and copy it onto a block.
I work in a cardiology practice. We had a pt that I made a card for, I used a copy of one of his own ekg's and die cut Christmas ornaments for the front of the card. It turned out really neat.
Vickie