My kitty who died last June, Simon, used to tug on the sleeve of my PJ's when he wanted to be petted in the middle of the night. It was so cute! He'd start by sitting by my head and quietly mewing and chuckling in my ear, and if I didn't respond he'd find my arm and take my sleeve in his teeth and start tugging on it. If I STILL didn't respond, he'd grab the sheets in his teeth and start tugging them back. And if that didn't work, he'd crawl under the covers and start licking my feet - I'm very ticklish, so that always worked if nothing else did. Oh, and sometimes he'd lick my eyebrows before he started mewing in my ear.
I miss my little friend - he was 20 when he died, and he always slept on my ankles. Our other cats, Beatrice and Rosalind, sometimes sleep on my ankles now, but it's not the same as my cutie boy.