You can get silver wire which works fine from Amazon. Or maybe a jeweler near you can sell you a couple inches of .999 jewelry wire.
Good luck.
I went to the local shop here and smallest they had in .999 was 1oz coins @ $35 each plus tax I passed and went home ordered 2 5gram .999 bars from Monarch Precious Metals.
For $7.60 each plus shipping. Total shipped was $21.60 for the 2 5gram .999 silver bars and they are approx 1 1/4" tall x 3/4" wide about perfect size for what I need. And about half the cost of 1 1oz .999 coin.
Also found a little video on Youtube to show the size a little better for anyone possibly interested in them.
http://www.youtube.com/watch?v=YrRUvNYnxns