Why not use a piece of silver wire instead of a jumper cable?

Teflon is good, BUT try air. Take a piece of # 22 OCC copper and rap that piece of pure silver about 1 turn per inch. Tuck it in the air tube. Tin the end with 4% silver solder and silicone the tube closed. Dip the ends in graphene dust and install in a 5 way binding post or add pure copper or silcer coated copper terminal ends and cold weld them (pressure) or screws, NO solder only to tin the ends. When you cench the screws they should pierce the tinning. If you use pressure, just use contact enhancer. before you compress the terminal end/wire with the dye.

Merry Christmas.. 

I use: 
 

There is also silver plated version available on Amazon.

I don't use jumpers, but if I did they would be silver. I'm a big silver believer!

Your silver wire jumpers are probably as good as anything you could purchase.  If they sound good to you, then stick with them.  However, some like terminations on their jumpers for convenience. 

Wire and connectors that might work well for those making their own jumpers include 5N OCC 14awg copper, or 5N OCC 16awg silver.  Consider KLE Bananas, which are silver plated pure copper and are stackable, and simple copper spades like these from Vampire or these silver plated copper spades from Xhadow.

Then why do some here crap on others for using interconnects or speaker cables constructed of silver or copper plated with silver? Never understood that, as My QED silver anniversary speaker cables have always sounded great to my ears. I guess Ortofon knows a secret or two as well, as in both the 2m bronze and black, they use silver plated copper wire in their construction.