I hand drew a gif similar to this years ago, but it was sloppy and the end didn't match up exactly with the beginning so it never looped cleanly. I loved this class! It made the whole animation process 100% easier. It's been awhile since I've used AfterEffects so getting around the program was a little tricky but once I got the basics it was a lot of fun to redo my animation and give it some life. Makes me want to incorporate gifs more into my art! 

One question I had during the process was is it possible to copy the same ease-ease curve for two separate objects in the animation? 

Here's the sketch I made before bringing it into Illustrator. I made separate layers for the dust particle, vacuum, body, arm, head and cord. 

 

Let me know if there are any animation adjustments you think need some attention.