MOTM

So now that I have been fiddleing with my modules for a bit I find the
need for 2 things:

1.- knobs to attenuate things like modulation sources.  I could be
attenuating both CV or audio.  Do I use log or linear taper pots? 
100K OK?  Any suggestions, circuits?  There seems to be a bunch of
stuff oot on the 'net but I thought it would be a good idea to ask
fellow MOTMizers.

2.- a voltage source where I can get from say -5V to +5V with the
swing of a knob.  I am led to believe that PS decoupling is very
important in this application.  Any suggestions, circuits?

It makes me giggle a bit to realize that the complex things like a VCO
that tracks linearly from DC to 37.5 terrahertz is a slam-dunk but the
little niggly bits like cables and silly like tweaky circuits are
missing from my rig.  Here is an icon to depict me giggling ---> :-P

PLL, BFG