I don’t know how I even stumbled across this idea but I was very glad to have found it. (Now Pops also knows that it certainly wasn’t my idea!) It is very hard if not impossible to find “Pops” or “Grammy” cards at the store. Homemade is better anyhow, so here is a homemade (with some help) option.
The site has almost all the work done for you. You just have to print their images, cut, fold, tape (or glue) and sign. It is a bit more work than a store bought card I suppose but your “Pop” or “Pops” will love it.
Here is how ours turned out: