So this week, my WFMW tip is a pretty simple one. I don't know about you, but we eat a lot of snack crackers. We eat everything from Kashi 7-grain to the good old Cheese-Itz. We probably go through at least a box of crackers a week. Instead of throwing away the boxes, I'll keep them and use them anytime I need to send a package. They work great because you can just take the bag out and normally the box is very clean inside.
Books fit great. I use it all the time for sending books for PaperBackSwap. I'll put a book or two in the box, toss in a crumpled up paper towel to keep the book from moving around too much, and tape the box up. Apply a shipping label to the front of the box, and voila, you've got your own package without having to pay for a box at the post office. It really is a great way to recycle your otherwise trashed boxes. I'm sure there are a lot of other things you can do with snack boxes, but this works for me.
For other great tips, check out Works for Me Wednesday at Rocks In My Dryer.