Amazon.com: wii to hdmi Adapter Converter with 3.5mm Audio Jack&1080p 720p HDMI Output Compatible with All Wii Display Modes ( HDMI Cable Included) : Video Games
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Wii to HDMI Converter , PORTHOLIC 1080P Wii2HMDI Adapter with Cable for Nintendo Wii, Wii U, HDTV, Monitor - Walmart.com
Wii + VGA + PC CRT = 480p crisp, portable Melee for cheap (explanation in comments) : r/SSBM
VGA Cable for Playstation PS3 and Nintendo Wii | Ceres Webshop