I love checking out the illustration hashtag on Instagram. It is a great source of inspiration and an amazing way to find new artists.
I really love artists that come up with super creative series. Some ideas are so cool that it's impossible not to come up with tons of pieces and by the end, to publish a book with all of them. That's the case of Badass Cartoon, a series by French artist Sylvain Sarrailh.
Sylvain has the most awesome crossover ideas, like Mario meets Akira, Pac-Man meets The Thing, Sonic meets Dragon Ball and more! Here you can see just a few of his crossover ideas. For much more of it and for more information about how to purchase the book, please visit his portfolio at DeviantART. Cheers! ;)