There is this new software called Gravit Designer. It is a browser-based app for vector illustration and UI design. I am testing it from time to time, for it is still under development, but looks very handy and promising.
Here is their logo (I do not know the author?):
At one point last year, while fooling around with the logo of Gravit and trying to do something fun with it (for the sole purpose of fun), this happened:
…and then it changed and evolved into that:
And here is the GIF version:
The team behind Gravit liked this second little fellow enough to call it Gravil and choose it for their official mascot. So I am quite proud with the progress of this little baby. Gravil even made it to new York city in life-size version! :-) Wish him luck!
Oh, and I strongly recommend you to try Gravit Designer — you will enjoy its features and the ease with which it can be used. :-)