You go get a kid old enough not to swallow them and count to 10 or so, and young enough to think one on one time is cool. Then count stack and roll. The bank will give you free coin papers, or did last time I checked 4 years ago. Of course some kabitzing about what is on the coins, and how they are ridged or not, and different sizes, and what they are made of, and how it takes forever to make a roll of nickles. and how some quarters have one thing on them aned some have another, (my son is fascinated by the texas quarter cause it has texas on it, and he knows that state, he doesn't know the heads at all well. can't blame him)and how you are getting paid x amount by the hour (taking the total rolled divided by the time) Depending on the age a special treat of some of the cash is in order. Also if any canadian ones have snuck in notice how they are close but not the same (country depending, suppose if you are in canada the reverse for american stuff and whatnot). The kabitzing was the best part when I was a kid, kidof lost intrest when I was old enough to do it myself.
Oh and if your kids are old enough for school, you can so take them out for a day of coin fun, it is way more than they would be learning in class anyway
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I always deposit them, but a bank you have an account with will give you cash for them. n(or mine will)