go to an army surplus store and buy some ammo boxes, what i would use is a .50 cal steel ammo can there are 3 diff size ammo cans
regular 50's 11.8in length x 6in width x 7.3in height
fat 50's 12.5in length x 7.3in width x 8.8in height
tall 50's 11.8in x 6in x 11in (but these have foam in them that will have to be removed)
price is like $6 - 15 higher the price the better condition
but your gonna have to have a smaller container too if you open and close anything enough all of your buds are gonna be crispy. i have 3 small lock top jars i got at hobby lobby for a dollar each the army boxes won't really raise any eyebrows. if they do say your getting in to geo cacheing alot of those guys use ammo boxes to hide goodies in for others to find with their gps's