User:Cooldeath26

Here Are My Favourites:
1) The Item Duplication Glitch:

Using 2 Item Frames, a chest, 4 bars and a work bench, you can duplicate any item of which there is more than two in your inventory. There are ways to do this on YouTube, which really makes this bug popular. Sadly, it is still not removed...

2) The Slime Invincibility Box:

You can become immune to damage using a slime saddle and two target dummies. Riding the dummies allows you to take no damage unless you use a piercing weapon, which will take you off the dummies. This trick does not work with the Moon Lord.