Makeshift n. : That with which one makes shift; a temporary expedient.

Example:
How would I Makeshift attachment of a cooling fan to a PC case?

Taxonomy
makeshift, Merriam-Webster Online Dictionary, Dictionary, webster, Word Games, Webster Online Dictionary with audio pronunciations, glossary, english, language, ESL, māk, crude, temporary expedient, synonyms, adjective, Unabridged Dictionary, Search Boxes, Open Dictionary.

Defination from the web:
makeshift from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... Main Entry: make·shift. Pronunciation: ˈmāk-ˌshift Function: noun. Date: 1766 : a usually crude and temporary expedient : substitute ...