My current favorite trades are in the SHL junior league. First, Regina Elk traded their season 72 3rd round pick to the Carolina Kraken to help make up the difference between 2 draft picks being exchanged. Then, Carolina promised the later pick of Regina 3rd and Carolina 3rd to Detroit. Then later the Regina 3rd got traded back to Regina along with a Kraken 4th for a player, Alexandros Mograin. However, they opened up a chance for having to give Detroit a pick they didn't have if the conditional didn't work out the way they hoped, so Carolina was able to trade back for the Regina 3rd pick and then, in that same trade, trade back to Regina the earlier pick of Regina 3rd and Carolina 3rd to complement the previous trade to Detroit. The standing cause the Regina pick to be earlier in the draft, so Regina got back Regina 3rd. And that's the wild tale of how Regina kept their 3rd while almost causing Carolina to double trade.