Forever▲12GTA 6▼13Call of Duty: Modern Warfare IV–4The Legend of Zelda: Ocarina of Time (Remake)–5Final Fantasy ...
As for trading, they offer swords and axes, both with and without enchantments. You can also get a bell from them if you need it. Furthermore, you can use their grindstone to repair tools and weapons.
If you're ready to convert your games to digital, check out the complete list of Xbox games that support the disc-to-digital feature here.