Fun things to do?

Randomly climbing the roofs of houses and free-running ontop of buildings listening to Linkin Park.

Well for me it has been trying to get 100% of the game complete, but I am still working on getting the money for Altair's sword and getting the feathers. Besides that, I have finished the rest. I also like assassination missions and using smoke bombs to escape.

throwing money on the floor then assasinating guards one by one

These are all cool things to do, I'm now gonna try all of them!!

quote Xodus

I also like to make up my own little assassinations, where I follow a person/guard around and look for a perfect moment to strike without alerting anyone.

That one has gotta be my favourite so far.

Got to get the smoke bombs. They help in alot of missions. Yes, the girls are nice to look at, but also very useful to get past guards. Although this one group of guards weren't moving. I was going to get the thugs, but they finally came around.

The smoke bombs are awesome, even though I never used them until after beating the game for some reason. I wish you could hold more than three though. Also, does anyone now how to get the extras off of U Play in the menu when you press 'Y'? I thought you could get bonuses with your points on there. The extra stuff would be really fun to use.

I got a gauntlet type thing that I managed to make up. I go to the giant building in Venice that's off limits (Name escapes me!) and I gather all the guards around it (including rooftops first) which numbers ABOUT 25+. It's a really crazy number. I gather them, throw a smoke bomb in the middle of the courtyard and run up the steps to the gallows. If you do that, 90% of the time thye get glitched and only come up the STAIRS, nto climb up (even the agiles). They CAN climb up the small part next to the steps, but that's it. So I stand up there with only my sword and I got to keep them off the platform while killing them all. Try doing that without taking any damage.