Have you thought of how to deal with the used & useless keys and coins? An Australian artist Michael (or Moerkey) has his own ideas. Michael turned discarded keys and coins into bottles, lampshades and other beautiful recycled metal sculptures with creativity.
Michael said when he came across some old copper pipe saved from a previous renovation, he tried to make it something & different. After working out the technique he got creative. Then he searched around for all those old keys and copper wire that were no longer needed, and got creative with them as well.
Photos of the creative recycled metal bottles, lampshades, sculptures made up by discarded keys and coins can be seen as follows.