I guess the jumping puzzles we had to contend with during the Thirteenth Eclipse were so popular that the Jester decided to borrow the idea for himself. Personally, I like the idea, as I always enjoy the puzzles. But, then, I was a big Mario Bros. fan, back in the day. I've tried the puzzles out in the Harbor and in the Marketplace, but I haven't yet had an opportunity to check out the puzzles in each of the four house enclaves yet.
In the mean time, though, I've received some very interesting prizes from the Jester...
The most interesting thing I've received so far is a stack of Sun Flasks.

They actually come in a stack of 20. Which, as you can see, I've already reduced to a stack of 12. Particularly since they're such fun to use. Notice that they're classified as Dart weapons, so you can throw them at mobs. And they even do some damage. Of those I used while touring the Waterworks with a lowbie, they do from 2 to 6 points of damamge. They *seem* to also do a little fire damage when they hit, but the flash of light they produce is what makes them so much fun. I'll have to try them against some undead, to see how effective they might be in that case. After all, they are Ghost Touch weapons. And, the flash seems like it might be particularly effective against zombies. I guess I'll just have to try them out.
Of course, I've also been lucky enough to pull a couple of Irian, the Eternal Day Jelly Cakes. They're resurrection cakes. A great item to have in those groups where the Cleric isn't yet able to raise fallen characters from the dead. Fortunately, I haven't had reason to use them yet, as our groups have been lucky enough to be near a shrine whenever someone buys the farm.
The funny thing is, two days from now is my two-year anniversary in DDO. I remember that when I first started playing, I thought the festival coins were a regular part of the game. I was rather disappointed when the Jester retired at the beginning of January. Particularly with unspent coins in my various character's inventories.
I even saved up some coins from last year. Been waiting ever so patiently to take them over to the Jester to see what he gives me.
I think, this year, I'll have to save up all of the lumps of coal he gives me so I can join in the Festivult in July celebration next year. This past year, one of the players hosted the event in which you bring your lumps of coal to one of the taverns and have some fun in the PvP pit throwing coal at one another. But I missed out due to lack of supplies. :P
At any rate... good luck with festival coin drops! The Jester surely has something fun for you!!!