I think your best bet Ruta, might be firearm storage bags. They were
developed for the US military as a replacement for cosmoline and
resemble zip-lock storage bags. There are several different brands,
most offer two sizes, 12 inch by 12 inch (designed for handguns) and
12 inches by 48 or 52 inches (designed for rifles).
They can be found at most gun shops, sporting goods stores like
Dick's or Cabela's or on-line from Cheaper-Than-Dirt or Brownell's
and cost about $5 each for the small ones and around $8 for the rifle
sized bags. A 12 X 12 bag will hold a set of daps and a dapping block
with room to spare, the larger ones work great for hammers,
flex-shafts and other tools that won't quite fit in the small ones.
Use of these bags, along with a light coat of oil or wax (thanks for
that Cynthia!) will keep your steel tools rust free for years,
especially if you toss a little pouch of desiccant in each bag, and
store the bags in military surplus steel 50 cal ammo cans (about $15
each) available at most Army surplus stores, Brownell's and
Cheaper-Than-Dirt definitely have them.
Stay away from WD-40 for tool storage, it dries out and turns to gum
after a while, as does 3-IN-1 oil, just not as fast. A much better
choice for oiling tools is "Break Free CLP", an oil blended with PTFE
(Teflon) specifically designed for keeping sporting goods like
fishing reels and firearms lubricated and rust free. An old cloth
diaper (or other lint free cloth) dampened with Break Free and wiped
over the tools will keep them nice and rust free for quite a long
time. You'll be able to find Break Free wherever you find the storage
bags or sporting goods.
I hope your tools don't end up in storage for too long!