Next time you go for a walk outside or are running errands, make sure to notice some of the art on display all around you. Many advertisements and posters feature the work of artists and graphic designers that's beautiful and inspiring. When you see something you like, cut it out or get a copy of it and put it into a frame.
Many posters for local events, like art fairs, theatrical companies, dance companies and flower shows, often will showcase the work of local artists. Contact the coordinating organization to see if you can receive a copy of the poster. They may ask you to purchase it, or they may be happy to clear off some shelf space.