Look at these beautiful boards and joists! We reclaimed them during demo and will use them for a variety of purposes in the house. In fact, I have such a long list of projects - we're not sure we will have enough wood for all of it! Tops on the list of projects are reclaimed wood counter tops for the kitchen island, followed by a few open shelves next to the sink. And I'm still trying to figure out a way to utilize barn doors from reclaimed wood.
We are also faithful donors to Habitat for Humanity's ReStore. For this house, we donated the old kitchen cabinets, the appliances, ceiling fans and light fixtures.
I also love using ReStore as a source for materials like old doors and hardware. And in one embarrassing shopping trip - I bought a door that I realized I had donated months earlier!! (I've also been known to buy something I thought I could use, only to donate it back at the end of a project.)
So while renovating old houses does generate some material for a landfill - we're pleased that we can keep it to an absolute minimum!