According to our friends over at megnut.com there is such a thing as "cookie osmosis."

Place a slice of fresh bread in with your cookies a day or two after you've baked them, or whenever you find their texture has deteriorated. The moisture from the fresh bread will migrate to your cookies (through cookie osmosis.

see: http://www.megnut.com/2007/05/…..kies-fresh

I save and reuse tins that I've gotten cookies in for either food gifts or to "wrap" experience gifts like tickets, etc. Membership paperwork looks a little more significant when wrapped in a a tin instead of handing over a paper envelope. More importantly, this method helped me get rid of a bunch of tins I kept for future reuse before a big move. If the tin isn't decorative, I paint it with leftover spray paint (courtesy of an old roommate who left me with a bunch of junk to deal with when she moved out.)

Last year, I baked dog treats as gifts. I saved spaghetti jars and used that to package the treats. I also saved and reused small jam and salsa jars to fill with homemade sugar scrubs as gifts. The jars with plain lids I left as is. The printed lids I either covered with a piece of scrap cloth or spray painted over the printed cover.

Some thrift stores and garage sales will have canning jars for sale too.