Did you know that most gear should be stored at temperatures between 20-25 degrees C and 68-77 degrees F ? With the exception of HCG and HGH. Gear should also be protected from light and moisture. I hesr of guys hiding their gear in the garage or attic which is not a good idea because temps may fall outside ofthe desirable stroage requirments.
Safe handling is also often over looked. You should store your gear in a clean enviroment, not in a dirty old sock under your bed.
I have a top drawer of desk LOL
I keep my boxes of syringes and needles in a cupboard along with all my other gym gear (straps, supps, etc), but I have a little travel baggy with 5x 21g, 5x 25g, 5x 3cc, swabs, barrels and current opened vials in the drawer for easy access.
It's because my room doesn't get sunlight through the week, and stays nice and cool. Doesn't matter too much for anything except HGH which I keep in my fridge.
I keep my oils, orals and tabs in a fireproof safe made by Sentry. I keep it right in the top of my bedroom closet and it isn't hidden, per se. Even if I didn't want someone like my girlfriend to know about it, it's locked in a safe. It stays at a favorable temperature as it is in my climate controlled bedroom. You can buy a safe from any Walmart or department store for fairly cheap. Mine also contains important personal/financial documents in the case of an accidental fire.
Mine is under the Xmas tree 
Oils in child proof storage caintainer then high cupboard
Peptides in the fridge (reconsituded) (separate fridge Child proof)
Piptides in the freezer (Powder)
HGH in fridge (reconsituded or not) (separate fridge Child proof)
Insulin (fridge, but i dont believe this is necessary it can be stored in a cupboard etc) (separate fridge Child proof)
Pills in a child proof container in a high cupboard