In tubes or 2x2s stored in either a box or my binder. I also use my piggy bank for the ones I'll spend.
I use 2x2 cardboard holders to write date, grade, buycode, variety attribution, etc on and then slip the 2x2 in a PCGS-submission type mylar, PVC-free "Saflip" to keep the fragile window of the cardboard 2x2 from puncturing.
All of the above plus Air-Tites for better coins and some in albums & folders. Most of collection is in SDB.
Air tight containers I keep all of my silver in cheap Glad air-tight containers. I can mark the lid with with a marker with the contents (in case I want to sell). They never see the light of day or are exposed to the elements. This is just my idea of protection and there are folks on this site that have far more knowledge than I of how to store PM's. I would be interested to know if this is "stupid" on my part or if there are better ways to store silver. I do have some of my collection on display because I enjoy it. If I can't enjoy it, why own it :smile
I keep mine under my bed, on the shelf, in my safe, in my mini-safe, in the safe deposit box, in a wooden box, etc. I even store some junk silver in a wooden box with a chunk of sulfur in my closet.
In 2X2's with most of it in a SDB. The rest is scattered throughout my room. All the good stuff is locked up, though.
Better stuff is in airtites. The cheaper stuff is in 2x2 cardboard flips and some of them are even out in the open, sitting on the windowsill.
If not slabbing, hard plastic 2x2 holders for the good quality coins. They allow me to put a nice label on them if I need to for example from one of these - http://sites.dymo.com/Solutions/Pag...rPrinters(DYMO_US1)&prod=1768960(DYMO)&page=1 (much better than my chicken scratch). They fit nicely in standard 2x2 boxes on the shelf, and protect the coins quite well from possible rubbing/scratching damage from a roll, tube, a flip or whatever. Lower quality or bulk coins, as well as the bullion, go into the square tubes into boxes, where I don't care about possible rubbing or scratching while in the tube. Anything that is spendable goes into various cups and jars around the house that we all use when we need some. I'm aware the plastics are much more than cardboard, but hey, if it's a nice coin, it gets very good treatment regardless of it's worth ratio. If I've no problem spending $12 for a greasy burger lunch, I could instead make a healthier sandwich for $2 and nicely preserve 25 coins also. Better for me, and the coins, in the long run .