These giant-sized key switches from Kailh are massive! Many times the size of a traditional MX-style switch. Though intended as a novelty item, they’re fully functional and just begging to be put to good use. I picked up one of each type from Novelkeys - Blue (tactile click), Red (tactile bump), and Yellow (linear). 

So, what can you do with a three-button keyboard? A giant control-alt-delete keyboard to kill programs with authority seems the most logical application …

What You'll Need

Basics:

• Circuit Playground Express (or any other CircuitPython capable board, I just happened to have a CPX handy)
• 3 x Big Switch Series keyswitches (1 x red, 1 x blue, 1 x yellow)
• USB Micro Cable
• Solid core hook-up wire or alligator clip leads
• Pliers

For frame:

• 3 x 10mm white LEDs
• 3 x 10Ω resistors
• 1 x 3/4" x 36" wooden dowel
• Wood glue
• 4 x Small clamps or vise
• Hot glue gun & glue sticks
• Hacksaw or bandsaw to cut dowels