I voted Nickels but that's just me. I have probably searched a million cents in my life. Just don't care to search any more. Nickels sound fun.
I also voted Nickels. Have you found a 1950-D yet. That was my "Yeti" when I was CRH 35-50 years ago.
I, too, voted nickels. I did cents a few years ago when I thought they would be discontinued. Mostly nickels and dimes until the shutdown. Look for some like these
never have much luck, might pull a few ms coins, but no errors to date nor key dates some 40's and 50's in well worn condition of no value...did however buy 5 rolls off a vendor on ebay for 22.00 with shipping, and found 80% to be able to be packaged and marketed (if coin shows and flea markets ever open again, sigh) and 5 errors and 3 that i have a question mark...