Well, I put all the solutions in the first page (Spoiler tagged.)

I didn’t fully give away the final one in case anyone wants to work on it still.

I hope you guys had fun. I did. But I’m glad it’s over. Thanks for playing.

SOME FUN FACTS THAT NO ONE GIVES A **** ABOUT:

To date this contest generated 521 Tubmails in my Inbox.

MC Banhammer sent me the most Tubmails, clocking in at 29.

The first answer for the challenge came from Nicco.

There were 134 Unique entries in the contest (i.e. 134 Tubmails from different users)

Less than 4.5% of entrants made it to the final challenge.