Hi. My name is Lark. You may know me as Miss SaurusLarko (a trend started by Boshiwarrior) or, more likely, Larkosaurus.
I am also one of the brains behind Opticraft Prom! And, more recently, OptiClub!
I have some cool ideas. Here is proof;
I like how you're making a lot of awesome ideas, Great work. Keep it up.
But! I have new ideas! So, why am I telling you?
I'm not gonna make these, but, if you like my ideas, they are all yours to do!
*Only a few ideas and you may not like them, but with the taking away of melons, people will probably be looking for new money making schemes. I understand some of these are a bit crazy but if it helps someone out, great! 
1. Theme park!What it is:
Place with cool attractions
How you make money from it:
Charge people money to play
What could you put in it?:
A massive roller coaster you keep expanding as you get money, Golf using snowballs and ice which you will be able to get in the new update, and maybe vending stands selling bread and stuff.
2. Roman Holiday!What it is:
A roman villa where
spoilt minecrafters *ahem* I mean rich minecrafters come and live like a rich Roman for a bit, complete with slaves and beautiful surroundings.
How you make money from it:
Charge rich people to come stay and live like a king
What could you put in it?:
An amazing Roman styled villa and slaves for the persons every will.
(this is just something cool I thought would be cool when I went on a school trip to a Roman villa.)
Getaways!What it is:
A cool holiday that people pay to stay on
How you make money:
Charge people for a luxury holiday
What could you make?:
Find/buy/make an island and put a nice house on it
Now do you have any unwanted ideas? Post them below and I will add them, giving full credit to you!