Panel Mount Right Angle 10K Linear Potentiometer w/On-Off Switch [10K Linear w/ Switch] : ID 3395 : $1.50 : Adafruit Industries, Unique & fun DIY electronics and kits
PO6M+S-LOG 10K: Rotary potentiometer + switch, log., 6 mm, mono, 10 kOhm at reichelt elektronik