I brought sacks of felted and semi felted fleece with me, along with some good fleece, and hope to have a go at making felted rugs and pads. Using batts on the back sounds brilliantly simple, and a good way to use up other fleece that's not yet felted but isn't wanted for spinning. Do need to make the batts from fleece that felts, of course... Ryland would be no good, would have to needleflet that on.