I think you're going to have to adjust your expectations regarding how playful your BP will be. BPs sleep about 90% of the time. Occasionally, you may catch your snake reposition himself. You may even see him glass surf for a few minutes. That's it. The most active you'll see him is when you are handling him.
By all means, provide him with branches and vines to help him move about his enclosure. Give him different textures to touch; different smells to experience. Give him ledges. Move all the stuff around occasionally, so he has something to think about. Just don't expect a hamster. A BP is the opposite of a hamster.