Great video, always enjoy seeing them in a natural habitat.
Envious of your proposed Costa Rica trip Richard! I'd love to do something similar one day.
Boas do love to climb and are very good at it! As an indoor safe alternative, mine sometimes enjoy exploring the cat trees (cats are kept separate). No current photos but here's an old one from 2000 of 2 diff boas having fun. You can make jungle gyms and lean large wood against walls/windows and they can go explore. I used to have a whole room with tunnels and branches and would just let the big boas go in there for a few hours, I need to do that again.
she'd climb all the way to the top and then just chill out up there watching everything