I made this room. used green plastic chicken wire, 3/4 in holes, at menards. The 1/2 holes netting would have cost about double. the gliders have never even tried to put their heads threw the plastic netting. I bought long wood/plastic pieces and long screws and attached the netting to the ceiling. We used fleece to tied the netting together and 1 X 4 on the floor to hold the netting down. Put child safety stuff on the power outlets.
We put some cat stands in it, fleece over the rope parts. they have had no problems with nails getting stuck in rug. put a few anchors in ceiling and walls and have them some fleece ropes.