YES!
I am saving all coins now, but I do recycle my zin¢ ¢entavos (lol) for coppers every chance I get. The great thing about Rolled Nickels is that you do NOT have to sort them, unless you wish to seek out the "rare" ones. I have found quite a few older nickels like pre-WW2 nickels, and I also save anything older than 1964 since they are less common. In '64, the Treasury made a sh!t-ton of nickels, since Silver was being deleted the very next year, and there was a temporary shortfall of 1965 dimes, quarters, etc. I also find a few "Silver War Nickels" which were 35% SILVER. I have about 250 of those, but I bought most of them at coin stores. They contain MORE SILVER per "face value" than ANY OTHER U$ Coin ever minted!
That means they have more Silver than a pre-65 Dime! Sometimes I was able to get them for "scrap value" since the coin shops got a lower price for them at the refineries. Win-Win for Stackers!
I Stack COINS of all types, but mostly the Silver, 95% Copper, and the cupro-nickel coins.
Canadian Nickels before a certain date were over 90% Nickel, and highly magnetic :D
U$ Nickel$ are not magnetic, as they contain only 25% Nickel.

Ask me about the Texas Billionaire who purchased $1,000,000 in U$ Nickel$ sometime, because at the moment he got them, they were worth $1.6mm in metals value! :D