"Easy" button is pre 65 dimes and quarters. Half dollars if you want to get fancy.

Not a silver bug, but as you said simple enough to have on hand. I bought by the $5 - $10 face value here and there to add to the safe. Grade doesn't matter, don't care if they're Mercurys, Roosevelts, etc... Think I've got $60-65 face in dimes and about $30 face in quarters. Maybe 15-20 half dollars. No muss, no fuss. Set and forget, probably never actually need them but I guess they're around if it comes to that.