Railroad tie walkway -- are RR ties green? or soaked in creosote or chemical preservatives? by Miriam Zeilmann
Very cool idea: pallet wood garden walkway from Funky Junk Interiors. For my front yard that doesn't have a walkway!
Railroad tie and gravel garden/side yard walkway. I usually don't like gravel and railroad ties but this might be a workable and less expensive option than pavers for backyard walkway to screen porch