Rubbing her fur in dry weather, then zapping her ears.
Tie a tube sock loosely around her middle, just forward of her back legs.
Santa Hats for pets.
Dip a back paw in water.
walk
shakeshakeshake
walk
shakeshakeshake
evil look
My cats do not approve of poor behavior on my part.
Oh, and can’t forget these!
My cat does not like the dog. If Bernie was abducted by aliens and never returned, I’d suspect the cat.
Put a longish piece of scotch tape down her spine. It makes the cat think that she’s walking under a low object and she’ll walk all crouched down. It’s really rather hilarious. 
I will always stand by the tried-and-true laser pointer. In fact, I’m buying the boys a new one for Christmas. lol
Mardi Gras beads wound around the midsection are also a great deal of fun.
And don’t forget the old “catching invisible balls in the paper bag” trick. Drives the kitten wild
And last night, my smaller cat managed to get his head inside one of my gloves, then couldn’t get it off. I was laughing so hard, I couldn’t catch him to help.
While I previously tortured my cats with laser pointers, copious quantities of catnip, static shocks and santa hats I have found something new to torture them with:
Kids.
My 2 1/2 year old will run endlessly with the cat toys enticing them to chase her and when they catch a toy she picks them up and they squirm away and repeat.
We call it ‘catch and release’ kitty fishing.
Our cat loves nothing more in the world than when we crumple a small piece of paper into a ball and throw it for her to chase.
It is sooooo easy to fake her out by just pretending to throw it. She’ll rocket across the living room and over the couch and spend a good couple of minutes searching for the little crumply ball, then come wandering back and demand that we throw it. So we fake a throw into the kitchen, which is even more fun because she can’t get a grip on the tile floor with her claws.
This trick works about three times before she catches on and you actually have to throw the ball.
I’ll pet my kitty then push all her fur the wrong way. And leave it like that. She’ll sit there with her skin rippling for about a minute, with a look that tells me I’d be dead if she had opposable thumbs, then heaves the biggest sigh you’ve ever heard and starts licking her fur back into place.
My cat LOVES to fetch those little furry catnip mice. And the little plastic rings that are left behind when you open a new container of milk. He’ll chase it, bat it around the floor a few times, then carry it to me and drop it at my feet.
My cat HATES when the dog gets to them before he can!
Oh, and he hates the reindeer antlers my wife bought for him. But she insists on putting the ridiculous things on his head every year and then taking pictures!
Cats hate nothing more than incriminating evidence!
I love to roll my fat ol’ Manfred onto his back during one of his naps, and shove my face into his luxurious belly fur, and rub his belly (which he hates A LOT) and kiss his nose and blow in his ears until one micro-second before he wakes up enough to tear my face off.
Lather, rinse, repeat.
When my kitty is sitting on her haunches or laying down meatloaf style with her paws tucked under her chest:
lightly touch the few tufts of fur that stick up slightly about 2/3 down her back. <twitch, twitch> Repeat. <slightly harder twitching, tail starts sweeping> Repeat, tickling at three times in rapid succession. <whole back is rippling with twitching, tail is now lashing back and forth violently> Start to go to tickle again when kitty kamikaze attacks, sinking claws and teeth into hand while black claws rake my arm. HA!
The other one I like is when kitty is sleeping on my stomach and refuses to move. She’s like a deadweight. So I start to giggle slightly. Kitty moves as one with my diapraghm, bouncing up and down in rapidity. Look of consternation on her face is so funny that I begin to laugh harder. Then she’s really jumping. I laugh more, and finally she gets so disgusted that she gets up.
Of course, she gets me back by trying alternately to insert her head into my mouth or biting/chewing on my chin when I’m talking on the phone. And there’s always the light claw to the lip if she thinks I’m nto paying enough attention to her…
We’re codependent, my cat and I are.
Me too, essvee, except that my kitty, Oedipuss Rex (who posts here on occasion) just stares at me balefully, instead of ripping my face off.
Something else I do to annoy him: wash his butt for him with a lemon-scented Wet One if he’s walking around with it smelling like poop. You should hear the indignant yowls!
Also, I like to pick him up, plunk him on the top of my head, and yell, “CAT SCAN!”
And I forgot the all-time biggest kitty annoyer in the world:
The Weekly Trimming of the Claws!
Cosmic Creepers (not bolded because she hasn’t posted on the SDMB yet) takes it pretty well, but old Rex yanks his paw away, and squirms and pretends like he’s being hurt. Which I know is a total fake-out, because he flinches BEFORE I trim!
Latch the cabinet doors.
Hide the toilet paper/paper towels.
Yank the shower liner back, so they get splashed. Pervert cats.
Rub the hair on their nose backwards.
Gather all their toys and put in one place.
Use the can opener for MY food.
Turn the stereo on full blast when they’re sleeping on it.
Pretend to look for the person that goes with the voice on the answering machine.
My pervert cats like to watch me strip, so I’ll often drop my clothes on their heads. They hate that.
When they’re sprawled out in the middle of the hallway, I like to pretend that I don’t see them and that I’m going to step on the new “catskin rug.”
After twelve years, our cat will still herniate herself trying to catch the reflection of light from a pair of eyeglasses. If I just want to annoy her, I’ll click the ear pieces against the frame. She immediately starts looking wildly around for her little reflective “friend”.