All you really need to do is to thoroughly dry everything and store where it's not too hot, because most of it is made from some kind or rubber and heat is unforgiving to it.
Put regs in something that will keep dust out but can breathe. Plastic bags tend not to let moisture out and, if closed, can allow mold to grow so use with caution. You can put your wet suits on hangers in your closet, if the hangers are "thick" enough to support the neoprene, or you can just fold them up. Masks should be put in a hard container so that they don't get crushed. If you've got the foot pocket inserts that came with your fins you should put them back in (or push in some crumpled newspaper), but it's not critical.
If you are ambitious you can unscrew the over pressure valve (OPV) on your BCD and flush with fresh water (you should do this routinely, anyway, to keep nastsy stuff from growing in there). Shake out as much water as you can and put it on a hanger for a week or so to dry, shaking it ever so often. Reassemble the OPV and store on a hanger or fold, or put the parts in a plastic bag and put in the BCD pocket until you are ready to go diving again.
If you are sure that everything is really dry you can put lots of your gear in the large plastic bins (with tops) that you can get anywhere (Home Depot, etc.). It's a great way to store gear and, if you buy the clear ones, you can see what's in each bin without having to open them. They're also great for moving a lot of gear quickly, like when your packing for a road trip to a dive site.
Your gear is pretty robust. Just use common sense in how you fold it, store it, etc., and it will last.
Bill