Nothing new, there was an old tv show called "World's Weirdest Collections" or something like that, on the Travel Channel or A&E, it only lasted 1 season. But one of the segments was the barf bags, another was vacuum cleaners, shoes, which we know is popular now. It was an interesting show and a bit different then the usual "Pickers or Pawn Stars".
An actual good one is "Collectors Call", on MeTV, it focuses on peoples collections too, but mainly pop culture. Lisa Whelchel, from The Facts of Life, hosts it. I watch it whenever it's on.
You can search "weirdest collections" and see similar stuff from the results.