I try, but my wife keeps setting the 'junk' out by the curb.
Oldest thing we have is a percussion gun from probably the 1830s
pic of it here, in case you're interested. It's an underhammer rifle, which already makes it unusual.
http://www.picturetrail.com/gallery/view?p=999&gid=1687016&uid=408952&members=1
(if you go to the site, the Lancaster gun on the photo album is a repro my hubby uses).
I have some knitting books almost as old, though.