Thank you

Pff THANKS~

Haha, You've come to the right guy!
Lets start with Torture by Burning and Branding!
Of course there are the well known burning on a stake, but there are other variations like boring with a hot iron! Hot metal go through skin very easily, but is extremly painfull!
There are also the gruesome BRAZEN BULL (one of my favourites), if you dont know what it is.. Look it up! Its an amazingly cruel invention!
There are also variations of normal burning, like only burning ones feet, or strapping one to a metal bed, and putting a fire underneath. There are even toture methods were you are strapped around a poll and cooked like a chiken over a fire. (you know, spinning it around)
A not so known, but very cruel method is also frying on a big pan! Yeah it sounds kinda ridiculous, but in ancient assyria they used to put christians on a big frying pan with oil or resin, and then let them roast untill their death.
There are ALOT more of burning methods but these were just some. Under the spanish inquisition they really led their fantasy run wild, and led to alot of these imaginary torture methods!
Then there are torture by crushing, smashing or breaking.
There were invented alot of different instruments to crush or break different bones on the body. Like the thumb screw, the weel (i hate the weel, i think its a stupid unoriginal idea though xD ) and the SCHNEIDEN also known as the headcrusher !

(just google their names and im sure there will come more info up)

Well, Then there are tortures by impaling, tearing, cutting etc. !

Another invention i really like, but is very infamous is the barrel! (i love how the names are so boring, but the devices are so imaginary xD) Well, the barrel is - a barrel filled with shark spikes! One was put into the barrel and rolled down a hill! Ouch~
Then there is the much creative Blood eagle! Which were invented by the vikings.
The victim were bend over and strapped to a block, then their ribs were hacked free of the backbone, and the lungs carefully removed while the victim was still alive!
Its said to look like a pair of bloody wings !
An ancient chinese torture method is death by one thousand cuts!
Of course they will not be able to cut one thousand times, but it may have felt like that for the victim, were slowly pieces of meat were cut from his body.

There's also flaying - Tearing the skin of a person still alive. Simple but VERY slow and painfull!
Another effective but not that creative method is impaling. A pole to strong enough to hold a humans wheight is stuck to the ground. And yeah, then the victim would be sat on top and impaled through his arse and out through his head! If the pole missed the heart, he could be alive for several hours.
Another more famous - and more cruel - version of this is the judas cradle!
.. Well, search it on google!

Torture by streching and suspension!
The pulley! The victims hands were tied behind their back, and then a rope from their hands were lifted up with a pulley!
This usually led to dislocating of the shoulder blades, and to put on even more pressure, the victems feet could be tied to a rock!
Then there's torture by water! Of course there are boiling, ducking, the chinese water torture, and in never times the Nazi's have used a method where they would fill up a half room with water, and just let the victim be there for days!. But the most cruel method (i think) must be Tormento de Toca Also called choking to death, the victim were completly filled with water. AND YES. COMPLETLY FILLED. Then they would get a gag-ball on so they couldnt throw up the water again. Sometimes their stomaches expanded so much from the water that it cracked and exploded! The excecutors would ocassionally roll the victim back and forth on the floor, just to make the pressure even bigger, and make them even more sick.
But well, there are thousands of torture methods out there! Not even imagination sets borders here..
Nowadays - or in newer times, torture is more focused on the psychological part, but there are still people who stick to the old fashion way of causing direct pain, mostly with tasers and other electric devices.

Hmm yeah, I hope that helped a bit XD!