system
Given the following post, respond as if you're commenting on Reddit:
human
[A:TLA] What are some fun, unconventional and/or lucrative ways to use bending?
gpt
Well, we see how Aang invented the air scooter to play games with, so there’s a start. Airbending could probably be used for acrobatics (see the “Ty Lee is an Air Nomad descendant” theory to get an idea on that), and also to control the path of thrown objects-someone skilled enough could likely pull off Bullseye level bullshit with anything. Soundbending has been thrown around as a possible technique, but it’s unknown if the level of skill required to manipulate sound waves can be reached. It’s also theoretically possible to create an “air bubble” closely around your skin to let you breathe underwater, similar to what Percy Jackson does when swimming. Creating mirages?

Waterbending could be used in botany and crop growing-see the swampbenders and the reverse of Hama’s plant technique. Ming-Hua used waterbending to accommodate for her lack of arms, so we know it can be used for artificial limbs if necessary. A skilled enough practitioner could create a structure with water, then freeze it into ice to create homes-there are ice hotels and houses in certain parts of the world. Ice skating would also be amazing. See the above “air bubble” theory as well, expect for keeping water away from the body. 

Earthbenders can do construction on their own, and we know from the Kyoshi novels it can also extend your lifespan. Searching for precious metals would also be incredibly easy, especially with seismic sense. Metalbenders can create plenty on their own as well. Sandbending is shown to be a thing as well, and with enough skill it may be possible to go from sand to glass similarly to earth to lava. Crystalbending is likely available to be used. Possibly siliconbending? 

Lightbending may be possible for firebenders. Plasma could also be manipulated, but it’s too early in the world to see that. Coldbending by taking the fire *out* of something is possible, given that fire is simply coming directly from chi. Steam?