The hide boxes are two plastic flower pots, a PVC perch covered with astroturf. I cut an arch in each flower pot with game shears. I then sand the rough edges. I put the PVC perch in the middle (with caps on the end) for the owls to perch on. I then paint the exterior with plastic paint in camo colors. I use local leaves and ferns as stencils to make the boxes appear more 'woodsy'. I also put a heavy rock or brick at the base to stop the boxes from tipping easily.
Materials list: Pair of matched plastic flower pots, PVC pipe, (I use 1 inch inside diamter). Flat caps for end of PVC. Camo plastic paint, screws, astroturf.