The Dink Network

Okay I'm starting to run out of ideas for secrets in my upcoming Dmod Of Life-Black Guild.
I would like some good ideas for secrets for 1,2,3.
HELP?

Lots of gold should be hidden somewhere.

You can make a wall that if player punches it 10 times, it will reveal a secret door. Also put somewhere hidden, a note, so the player will know which wall to punch.

Find a bunch of seemingly useless items that are somehow related, and they open up a big secret somewhere.

Or, you have to somehow connect those items in a stupid way to open up a big secret. In the Discworld game style.

Cheers

hmmm...