A while ago, Microsoft discontinued their hugely popular Clip Art collection that allowed you to search and insert visual content right from within PowerPoint without having to pay anything extra. Even better, most of the time you never had to worry about licensing since Microsoft made those available to you as part of an option within their own program.
And now Microsoft has have teamed up with Pickit, a Swedish resource of pictures.
Don’t expect to choose the Pictures or the Online Pictures option from the Insert tab of the Ribbon, and then find an option to search and insert pictures from Pickit. The process works a little differently. Tom Kuhlmann of Articulate has a detailed post. Additionally, Articulate also posted a video to easily explain the process: