Switch Contact Blocks / Switch Design Kits
This is a kit that is nearly complete.  Please see photos.

Würth Elektronik offers a wide range of design kits created in house for engineers to use during development. A product index of part numbers and part values is indicated in each kit, which allows for users to pick and choose a part to test in their design.
Order Code 499 001 Verison 2.0
Retails for $241 at Mouser.

Dip Switches
Tact Switches
Rotary Switches
Slide Switches
Detector Switches
Push Button Switches
Accessories