I use "!s" in DDG to get to Startpage [1] search results. One letter shorter to access the same - no need to type "!sp" when one can just type "!s" instead. :)

This does not work for replacing "!spi" (image search on Startpage) though. Using "!si" does a search on a non-existent subdomain sportsillustrated.cnn.com.

[1]: https://www.startpage.com