The better of my meditation techniques involves sounds like cicadas(the best!), crickets, and even the sounds of children playing in the distance. I go to the park and sit with my back to everyone and just drift away into The Empty. Second is standing in wind, without a shirt or very thin shirt, with my arms outstretched and feeling it over my whole body. I'd love to do it naked but there are neighbors here. My third is candles, but somehow they always go out once I return, and right when I open my eyes, because I see the little puff of smoke. That used to scare me, but I realized it's the Universe welcoming me back by her wishing on the candles for me.
I have trouble letting the bad energy I've collected go and it becomes internalized and I tend to use it against my self. I know that's bad and I'm misplacing it and need to release it. My usual intention for yoga practices is the mantra "Lokah samastah sukhino bhavantu" meaning "may all beings be happy, may all beings be free" but I've begun to dedicate to those I know need the good energy. A friend hadn't slept in 2 days, but was asleep before the practice was over. She was nowhere near me, 250 miles away