On Mon, 20 Aug 2012 16:13:53 -0500, Vic Smith
wrote:

On Mon, 20 Aug 2012 13:51:43 -0700, Oren wrote:

On Mon, 20 Aug 2012 16:03:44 -0400, Metspitzer
wrote:

Using a wall outlet box with a telephone jack cover is a pretty good
one.

.. and four pages of more places

http://www.misdefenseproducts.com/Hiding-Places-for-Valuables-p-1-c-272.html

(JB Brake Cleaner Secret Safes)

I don't think the beer can safes are very "safe."
Ajax cleaner under the sink looks decent.

Anything that is portable doesn't seem as good as being attached.
Rigging up a plumbing pipe to look like a clean out port seems really
easy and very inconspicuous.