Creating your own universe is simple! Wouldn't you love to impress your friends, conduct vital experiments, and solve universal questions? Who wouldn't? You'd have to be crazy to pass up an opportunity like this. To create your very own universe, all you need is a whole lot of energy in any form (and by "a whole lot", I mean "get as much fucking stuff as you possibly can, multiply it by 100, and then you're at 0.001% of the barest minimum you might be able to get away with"), a really, really, really big (infinitely large is a good term here), totally empty space, and the ability to create a single constant of your universe. Oh, and you'll also need a LOT of time. How much time? How does trillions of Earth years sound?

Haha! I got one! You don't! 😛

Our universe is based on one rule - energy. The entire thing is got energy everywhere. Heat, matter, sound, light, radiation, kinetic, potential, X-rays, and plasma are just a few forms of energy. Our entire universe can base itself entropically on one law - energy cannot be created or destroyed, but it can be changed. Conservation of energy lets us know that whatever stuff we had we will have until the end of time. So, if you're modeling your universe on ours, just stick all of your energy in the big empty space and WHAM! You have your very own universe!

After that, all you have to do is sit back and wait. For a long time. A really...really...really long time. Eventually, as time goes on, energy will gather (since, by definition, energy can be kinetic, and energy can change forms, energy is able to move- BAM! Your universe's second constant! We're on a roll!) and form masses as it changes into solid matter. As more and more energy gathers, it'll eventually form one super ball o' stuff. Then, all you need is some kind of really big bang or something, perhaps caused by conservation of energy's ability to change energy, to get the mass to spread itself out over your universe in chunks. How convenient is that?

And, since there aren't any major forces acting upon it, the masses of energy will just keep on moving - WHAM! Your third universal constant - an object in motion tends to stay in motion! So, they'll keep on spreading out and, who knows, maybe they will have gone and impacted and formed planets, asteroids, meteors, and the like. Or they could've formed giant balls of gas. Or they could've become really compressed for whatever reason and turn into black holes. However your energy manipulates itself is up to it, and there is not really a way to make it do your bidding. That's OK, though. Who buys an ant farm for its tremendous relocation abilities?

Yup. One of these, too.

So, we're probably trillions of Earth years into your universe, and already we're seeing basic symbols that reflect our universe. Planets, asteroids, meteors, and stars are all there. What's missing? Life. Our Earth scientists don't know how life started (we have theories of course - plasma being a big one), but regardless, your universe will eventually show the simplest forms of life. Prokaryotes will begin to show up in places that are capable of sustaining life, unless you are really unlucky and don't have any planets near enough to a sun to keep water liquid. If that's the case, either wait it out or you're screwed. However, since somewhere in your universe, you've probably got that, watch those few that exhibit the signs of prokaryotic existence. All they'll do is wander a millimeter or two in their life, but eventually they'll replicate into another. As mass replication occurs, evolution will take its toll (over thousands of years, sure), and we'll have some slightly more advanced organisms to observe. Imagine what that little no-chromosome-no-real-microorgan single cell must've thought when all of a sudden he spwaned off this more advanced unit. Or, for a closer-to-home example, imagine that you bought a new computer, like a really really old IBM computer (back in the days of DOS - what's that, daddy?), and the next day they revealed a computer that would be more powerful than today's think tank supercomputers...and it sold for less. You'd feel shitted on too.

Over the next few million years, life will become more and more complicated, and even at one point pass you evolutionarily (if you're still alive after the trillions of years it took for this ordeal to take place). That notwithstanding, for the little effort it took to create a universe, look at the immense reward you can achieve from it.

Not to mention, massive bragging rights to your friends.