I bought them, not that it matters. Other members on this forum have sent items from time to time to donate and to run on that layout. There are two extremely nice locomotives that that were donated by a forum member. They are only run 2-4 times a year when I can be there to make sure there are no issues.
I thought it was just interesting that the cars that I picked randomly to take over were all from Menards. The diesel pulling the train was donated by.. well a large train mfr (Not Lionel or Mikes) that wants to remain anonymous. That said some items from MTH, Lionel have found there way from the respective mfrs to the layout. Some of the locos and rolling stock are donated to the Ronald McDonald House and become their property, others are from my collection and are used change out what is seen.
I would like to thank Caboose Hobbies and the Mizell Family (formerly Mizell Trains) for their donations over the years.