Using a tutorial from NetworkChuck (https://www.youtube.com/watch?v=e_f9p-_JWZw&ab_channel=NetworkChuck) I turned a Raspberry Pi Pico into a fully functioning USB Rubber Ducky. I thought it would look better as an actual USB stick, rather than a circuit board and cable, so I made this case to house a Pi Pico and a micro usb to usb A adapter** (https://www.amazon.com/dp/B09FXJD61Z). It roughly looks like a bulky USB stick and also acts as extra protection for your USB rubber ducky.

When I printed mine, I also decided to add text on the lid to distinguish between my 3 different picos. I would recommend if you chose to do the same to use a relatively thick font, as you can see two of my sticks are very hard to read. On the third stick I switched fonts to Fira Code (its very popular with programmers and I think it might have to be installed to your system first), it was much easier to read, but I wanted it to stand out even more so I glued white prints of the individual letters over top.

And before anyone asks:

The rickroll stick is quite obvious, it plays rickroll in the background of a windows pc while locking the volume to 100.
The server stick uses python to host a server where the user's files can be viewed from their local IP
The Esposito stick downloads and changes a person's background to Giancarlo Esposito. It was a joke from my IT class last year and this'll allow me to get people before they even have time to process that someone messed with their computer.

** Other adapters with a similar shape might work, but just in case I left a .step file in case anyone needs to edit the geometry.