I did some research on the types of speakers I can use for my keychain and found this OWS-091630LA-8B SPEAKER 8OHM 1W TOP PORT 95DB) one on digikey. I haven’t worked with speakers before, so I also disassembled a pair of broken headphones I had lying around and I’m going to spend some time getting my pi pico to play something on it so I know how to wire it up correctly.