Send your brain into a dream-like trance, just between wakefulness and sleep, with two hours of low tone 5 Hz binaural beats. Theta brainwaves have been found to be strongest during times of meditation, and can help to strengthen the body and mind's ability to heal. These waves between 4-8Hz have also been associated with memory creation to assist with learning, as well as creativity and imagination, and spiritual awareness. Indeed, children's brains display more theta waves then adults, which could possibly help to explain why the adult brain struggles with imagination as one ages.
These tones need to be heard by the brain separately in each ear, so headphones are required. The frequencies help your brainwaves synchronize best when the volume of the tones are just audible - like background noise.
Tips:
Binaural beats work to slowly alter your brainwaves to the desired frequency, so the effect they have will most likely not be recognized immediately. Instead, try listening several times over the course of a few weeks to find which ranges and lengths of listening work best.