Desks, lockers and foot lockers? Hmmm....lockers, you need to go with Marauder or hope to get your hands on the PTE bunk/locker sets. As for footlockers, I've never seen fully functionaly 1:18 scale ones, but there are molded plastic ones with the 1:18 scale MASH set....you can sometimes find it on ebay...but it's pricey...usually goes for about $70 - $120...on the upside it has tents, footlockers, chairs and mess hall tables along with hospital beds! As for desks, I say make your own or try doll stores that sell doll house supplies...if not, look for Lil Bratz stuff on ebay. It's scale is close enough to GI joe to pass...I have like 7 of their sets! Sometimes, you can go into dollar stores and they have dollhouse furniture cheap! Or you could try scoreing some Playmobil sets...the Office furniture set was about $6.99 on ebay (and probably the same amount for shipping!)

hope that helps!