Things to sample! The Casio keyboard is actually my stepsons, rescued from the garage and it’s spider webs, dust and general crud. I cleaned it up and bought a new power pack for it. Sounds good and still works very well! The guitar needs new strings
I have a Casio keyboard similar to that. It's fun to play even if it doesn't sound great. Enjoy your instruments.
It’s surprising how good it sounds given the build and how cheap it was when new. We’ve resurrected it for our grandkids to use when they’re a bit older.