See also the large selection of home cinema projectors and professional data projectors.
A projector for hobby use can replace a large TV without mounting, for everything from parties, sports broadcasts, gaming, films/series, photo viewing and much more, in an extremely easy and convenient way. The only thing it requires is a white wall, canvas and that it is a little dark. Take it out as needed and connect e.g. from a phone with Chromecast or play from an App (both require support in the projector).