I was surprised to learn that amid COVID-19 challenges, a new railroad museum was started. Over a year old now, the Bridgeton and Saco River Railroad Museum has incepted from an idea, gained 6 board members, incorporated as a non-profit, and acquired over 5 acres of land in Bridgton, Maine. Plans are afoot to make an operating railroad museum with track along the old B&SRR mainline. They say they have hats made, but I do not yet see ways to buy them, to pay for a membership, or to send a donation. Hopefully all these and other important details like equipment will resolve themselves soon.
Link to Bridgton and Saco Railroad Museum website