1: You'll need to go to any level (preferably on hard mode) where you can get a huge amount of squares fast. Personally I recommend world 14. Play through this level, collecting as many squares as you can and once you finish, sell all items that you don't need to keep to the shop. Repeat until you have a large amount of squares (I mean REALLY large, like 30 000 of them)
2: Go to level 11 (curiosity) and speak to the enchanter. Upgrade any items you want with the cash. When you are finished DO NOT press the back button. Instead, either press the open inventory key (e by default) or the pause game key (p). this will let you back into the level.
3: Now for the fun bit. Either jump off the cliff to the left-most part of the level or press backspace to kill yourself. Make sure you don't trigger any re-spawn points.
4: What? You now have billions of squares, but your items are still upgraded? AMAZING! You can repeat steps 2 to 4 as many times as you want and always get the same result! After a while your items will cost too much to enchant so at that point you will need to repeat step one. Keep doing this for super easy enchantments!
