If you are building a pit , home made pedals or want some custom control equiptment take a look at this:
Genius F-23 MaxFighter Joystick
I know its cheep and nasty and you would'nt want to fly with it but:
If you strip it down for parts you get:
4 analog pots worth $10+
8 push to make buttons incl 2 miroswitches worth $5+
1 8-way mini-joystick
1 USB2 contol board worth $60+
1.8m USB lead $2
All this for less than $10
this allows you to build a set of controls with 4 anolog levers. trim wheels , flaps , prop pitch , throttles etc... and up to 12 button funtions for gear levers/winders ,dive brake levers, and covered switches for drop tanks , detach , wingfold , bale-out (stuff you need but dont want to press accidentily)
I have one I am building into my Master pilot and a plastic box for trim wheels (Blank CDs make good sized trim wheels)
GuitarMan has one he is building ito his simchair.