Tackk is a lot like Smore. You can make digital posters and flyers and share them with a URL or embed them in your site. Here’s a quick Tackk I made just to see what it could do. This is just the thumbnail, but if you click on it, it’ll take you to the whole flyer/poster. I had trouble embedding a whole Tackk in WordPress, but it let me do the thumbnail version.
Here is site’s gallery, if you want to browse others and get some more ideas.