Height 2500mm. from floor to ceiling.
Framewood 72x72mm. corners rounded
3 Ikea FROSTA stools
Approximately 120 meters of hemp cord.
2 rattan baskets, I would have used Ikea GOSIG baskets but they were sold out.
A hand full of screws and staples
Use screws to fasten stools to framewood and to fasten baskets to stools. Twin hemp cord around everything and fasten the cord with staples. Use something to fasten cats climbing tree to ceiling ant floor.