Have a Place for Everything and Keep Everything in it's Place
Assign a "home" to everything.
Get a labeler at an office supply store and label things. Label shelves in the pantry. This will also help when others in the house are putting things away.
You can, of course, store things in plastic boxes in the basement or garage and then make an inventory list for quick and easy finding.
-Daryl Hoole and Daughters, "The Ultimate Career, The Art of Homemaking for Today"