Create a floating platform: Grab a board (or any similar object that you can safely stand on) with Ultrahand, push it out over the gap as far as you can, then pull it back to you. Next, stand on the platform and use Recall on it. It's motion will be reversed, meaning it will float out as far as you had pushed it earlier – with you on top of it! This is perfect for crossing medium-sized gaps between sky islands or other chasms.
Easily gain height: Same principle as above. Use Ultrahand to lift an object vertically, then lower it back down in front of you. Stand on it, then use Recall. It will float back up and elevate you with it. You can even do this with a simple stone!
There's a super cool "extreme" version of this I found online: Stick together as many logs as you can with Ultrahand. Rotate the "super-log" to an upright position. Still with Ultrahand, lift it vertically, then place it back down. Use Recall to lift it back up slightly, leaving enough room to stand directly underneath it. Once you do, use Ascend to ascend to the very top of your super log!! This trick can potentially get you up ANYWHERE, you just need enough logs