u/Darkbulborb

Does anyone know why my airco makes this buzzing/ rattling sound?

When I was a little younger, I made these custom Catan tiles. I used to play Catan with a friend of mine, but lately haven't been playing the game. I'm thinking of throwing this away, but before I do, do you guys reckon anyone would want this set? Maybe I can sell it? What is your advice in this situation?