How am I supposed to get rid of sixty handmade leather belts I secretly bought from my dad's failing online shop so he could retire happy?

So five years ago, my dad retired from factory work and decided to start a small leathercraft business in his garage. He spent thousands of dollars on tools, veg-tan hides, and brass buckles. He set up an online storefront on Etsy and waited for orders, but after six months, he had made exactly one sale to our aunt. He was getting visibly depressed and started talking about how he was a failure who had wasted his retirement savings. i could not stand watching him sit at the kitchen table checking his empty dashboard every morning. I started creating dummy accounts with different names and fake shipping addresses across the country, using prepaid debit cards to buy two or three belts every single week. I had them shipped to a private PO box thirty miles away so he would not recognize the zip code. For two straight years, he thought he had a thriving small business. It gave him so much pride and energy. He would call me every Friday night excitedly telling me about orders from "customers" in Oregon or Texas. When his arthritis finally got too bad to work, he closed the shop feeling accomplished and proud of what he built. He passed away last winter. Now I have three giant cardboard boxes full of sixty identical handmade leather belts sitting in the back of my closet that cost me almost six thousand dollars. I should of just found him real customers instead of fabricating an entire market, but seeing his confidence restored was ABSOLUTELY priceless. What on earth am I even supposed to do with all these belts now?