If you had unlimited money, and time, what would you build?

I don't know if this has been asked before but I would love to see what you all would build with unlimited money/resources/time.

I know there are some newbies out there that are thinking of the same things that I am. Like I would love to build a large laser cannon or maybe experiment with some fiber optic cables+lasers. Maybe try and combine some different laser beams. I don't usually have a ton of spare cash so I guess I just like to dream of what can be made.

I'd also like to hear about some more advanced stuff that I know some of the senior members would like to make. Show me some of your crazy amazing ideas! :)

So if you had everything you ever needed, what kind of laser related stuff would you create?:D