Reclaim discarded technology and make yourself a name tag that will forever brand you as a member of the technical elite.
Or at least get you into nerd pride movie night.
Step 1: Acquire Keyboards
Keyboards are regularly thrown away. Being continually pounded on by fingers, they break. Being in a position to have things easily spilled or dropped on them, they break. New computers tend to come with new keyboards, and people frequently are so used to their old keyboard that they throw away the brand new keyboard. Computers come with standard bare-bones keyboards, and people want fancy illuminated wireless ergonomic keyboards.
Whatever. Find the junk pile of any high-tech community, and you can probably find quite a few keyboards that no one wants anymore. You'll need one keyboard for each of repetition of the most common letter in your name. "WestfW" needs two keyboards cause it has two W's. "Mary Ann" still only needs two keyboards, but "Beekeeper" would need 5 to cover all thoses E's.
Step 2: Remove and wash keys...
Remove the keys by prying them up with a screwdriver or similar tool. This will get easier as more keys are removed; start with near keys that aren't needed for your name, so you can scratch them up and not lose any keys. Throw the keys into a net bag and put them in a dishwasher to clean off the finger gunk and dust. You can probably slosh them around in some soapy water by hand if you don't have a dishwasher...
If you're making more than one badge, or are likely to EVER make more than one, it may be helpful to make SOME effort to sort the keys into some sort of holder.