Allowed me to straight introduce to unDraw. It's an open-source series of illustrations built-in SVG, free and without any attribution needed.
I think it's really great when we get to see a set of illustration from the same artist, because we actually don't see that so often. So, I was looking for a print to buy at DeviantART the other day, and found this great spanish artist, Javier Gonzalez Pacheco.
Here are some great illustrations of this set featuring little colored squares... really stylish. Also, he's got some sweet sets in his portfolio, and you should really check them out! He'll appreciate it! I hope you enjoy these! Cheers. ;)