Searching by ways without text was incredibly inspiring to me. I looked to the way that Shazam and Google allow you to discover new things with sounds and photos. Searching and discovering without text allows for greater creativity and discoverability.
Another great tool to encourage discoverability is the "similar as" section that Spotify uses. This allows for fans of a particular music artist, to discover new artists that they'll most likely enjoy.
I incorporated these tactics into my own new Wikipedia. Users would be able to search by either drawing, uploading sound or taking a picture of what they're searching for. Once they enter their search, they are given a screen filled with possibilities in what they've searched. Once they select a keyword on the page, they are prompted to the description with a "similar as" section at the bottom.