yes i have some sources for new ones, i guess i'm thinking about old vintage , or antique knobs we can collect while traveling. that way each knob holds a memory of where we have been.
i collect hat pins like that, my wife finaly caught on not long ago.
she was looking at my old scoutmaster hat, covered in pins. suddenly she realized each pin was a special place i had taken her. now she loves that old hat that she has threatened so many times to throw away.
i just thought it would be a neat and fun way to put our own personality in our trailer.