I'm looking for something that levels quickly and how to do it, because I want perks in my Illusion I need to level.
I do not care what, just something I can do that will help me level quickly.

EDIT: As in leveling my character.

you can grind speech with the barkeeper in riften (at the meadary). He can be persuaded over and over again.

or take a shield into the wilderness and let a wolf hit you over and over to quickly raise block.

I'm aleready 100 speech

Practice practice practice!!!
I unwittingly leveled up skills without even thinking about it by simply using them far too much.
I'm primarily a brainless chunk of muscle warrior, but my destruction skills, lockpicking and speach are stupidly high simply by useage. And leveling up your skills is the quickest way to level up your charecter.

You're in a dundgeon? Lockpick every cage no matter how empty and pointless. Talk to everyone, barter insignificant items for stupidly small amounts of gold. Use your destruction spells on bears, bunnies, and anything else that gets in your way.

Give yourself a goal of journeying from one city to another using lower level skills that you wouldnt normally, and see how quckly those skills improve pushing you closer to that next level.

or just cheat it, same result, same amount of fun, saves time

Any magic skill can be level grinded very easily.

Restoration: Cast your best healing spell while casting equilibrium.
Destruction: Bring shadowmere to one of the magic wells at the college.
Conjuration: Dual cast soul trap on a dead body using wait to refill magika
Alteration: Cast detect life and levitate a bottle in a busy town.
Illusion: Dual cast courage on any friendly NPC.

If you're not 100 in one of those than that should work.