I like my lumber piles UP off the ground, and i don't like putting something down that will rot... So, i buy used but "solid" railroad tyes for around $7 ea. and put 4 of them down with a cement block under each end, and level it all up.
The tyes are 7"x9"x101", so there's plenty of room to have a stack 8' wide... That alows me to have two 4' stacks and work from either side, so i can have two different size stacks on each set of tyes...
I don't keep a lot of lumber around though, as i prefer to saw it out as i need it...
As for bands: I buy bands when i get a "deal" and just leave them in the box until i need them, so i always have some new bands ahead. Generally, i have one box of ten that i'm sawing out of, and another batch of ten that i'm setting and sharpening. I just keep rotateing the batches untill i need more, and then i start another batch of ten. It's just an easy way for me to keep the bands in batches of the same amount of sharpenings...
I'm really just a part time sawyer, so my bands last a fairly long time...
Rob