I ordered a reproduction Wii Sports case off eBay, so the disc is in a proper case and not the cardboard sleeve. Not the best quality ever, but it keeps the disc
Wii Sports (Nintendo Wii, 2006) Disc Only Tested Mixed Sports Game Golf BaseballのeBay公認海外通販|セカイモン
Wii Sports + Wii Sports Resort: 2 Games on 1 Disc Bundle Version - YouTube
Mavin | Wii Sports Resort - Nintendo Wii - Disc And Manual