I am hoping that some of you wood experts can give me ideas on this question. At the pet shop I have seen 6"x12" blocks of wood that are for birds to pull apart to make nests. I believe it is a cactus wood. It is fibrous and light and I can scratch out fibers with my fingernails. The sales guy called it "tequila wood" which suggests to me that it is agave wood. Have you any ideas on the specifics of this wood and where I can get some?
My intent is to experiment with it as a nectar feeder for small sap-sucker mammals with the hope that they will learn to tear into it to get at the dripping nectar and get a little mental stimulation in the doing.