Mix silver ones in the chocolate-in-a-foil-coins jar. I did this for fun once, and they blend quite nicely.
cast it into a 2'x5'x1/4" plate, give it high polish on one side, put it behind Ikea-like mirror frame & piece of glass, and hang it on the wall (although, better use heavy duty wall plugs for that one - if I am not mistaken, it would be about 136 pounds worth of silver :rotflmbo: ). Actually, changing the thickness of the plate and the dimensions of the "mirror" to your needs, this could be seriously considered quite a good "hiding in a plain sight" way of storing silver. Indistinguishable from a real mirror, other than by weight (which, beware - thieves might try to look behind it, looking for a hidden safe, so plan accordingly

)
Cast it into reinforcement bars, and pour some concrete on it

(Call ancona's company to help with demolition later, when required - but beware, do not enter into any contract regarding "reclaimed demolition stuff" with them, they seem to be quite clever mofos in this regard! :rotflmbo
And more seriously - there's plenty of nooks and crannies in your average house, that could be used to stash stuff in. But BEWARE, thieves are well aware of many of them.
If you do know any friends with troubled childhood, try to engage casually in a friendly talk about the most impossible places, that thieves were looking in when plundering. This was quite revealing to me, and I was able to eliminate few hiding spots that I was considering myself, as being an easy target, actually.