I use one of those storage containers. I have like a wicker basket I use for my controllers and junk and once I clean the junk one out, I'm going to put my carts in that.
Can wood effect a cart?
Nope
Maybe something like this 3 tier storage container I have? It is big enough to hold around 70 or 80 NES cartridges on one tier if I remember correctly. Of course now I just use it for storage of miscellaneous items
What types of games do you own? Knowing that can also be a big help in knowing what is best suited.
Either what Cap'n showed or these bins which I bought from Target. This is an old picture, now I have 6 towers full of NES games. The drawers are great and very affordable.
[img width=350 height=600]http://www.rfgeneration.com/images/collections/atari_wizard/GameRoom004.jpg[/img]