JM Bullion and SD Bullion. There are others you can DDG search. They are all about the same price but you can save a couple bucks here and there by premium shopping.
Never a bad idea to have junk silver too for barter situations. Only .90 pure instead of .9999 and in smaller weights. Really nice if you can have a few dimes with your half dollars.
I collect my pocket change through the year and by Thanksgiving usually have around 400 dollars worth. I go through it before I take it to the free coinstar at my bank and usually find one or two silver dimes and an occasional quarter.
JM Bullion and SD Bullion. There are others you can DDG search. They are all about the same price but you can save a couple bucks here and there by comparative shopping.