Hi Ankita, It can be challenging to find art that looks like it goes together as a set. I'm always looking for vector sets or series that have the same subject in multiple situations. I use practically every art service for vectors I can find--Adobe, Shutterstock, Dreamstime, FreePics, Graphic Mama, and any service that someone mentions here in the community. People are always mentioning new and interesting services. Sometimes I even use graphics designed for digital scrapbooking, which are not vectors, but they are created as a set and can be stunning when used together. When a new challenge is posted on Friday or Saturday I read the description and then I roam around the vector art world looking for visual inspiration. The art and my mood that day usually drive the project I create for the challenge. I'll see a vector set and think "Oh, I can use that art in a slider interaction" or "that would be a fun infographic". Cats and dogs are always fun for me, especially since all week long I spend my time doing e-learning for financial compliance, hedge funds, and property managers. :)