What do you do/plan to do with your dogs gear if they have passed away/when they pass away?

I have Kilo’s collar hanging off my headboard where I sleep and will probably ‘retire’ his main collars. I still use his leash with the other dogs. Unfortunately his backpack doesn’t fit Lola but it might fit Bjorn when he is fully grown. 

I have retired one of Kilo’s toys cause it reminds me so much of him and he carried it everywhere with him in his last month or so. Most of his stuff that he didn’t use every day (weight pulling harness, backpack, etc) I will continue to use for Bjorn or Lola if it will fit.