When people ask you to speed up their old crappy device, whether it's a phone, laptop or tablet (even though I'm a web developer), all I say is:

"Buy a new one, that isn't cheap and nasty"

!rant
Neighbouring nursing student asked me to recommend her a good laptop. I take a look at her existing one and it's an ultra book in pretty much decent condition. I ask her what her issue with this one is and turns out there's not enough space on the hard disk (30 GB SSD). I advice her to consider upgrading instead of buying a new laptop and she agrees. She also asks me if I can fix the track par of the laptop as it's not working. I take a look at the system tray and then work my computer science magic (press the fn+F9 to activate the trackpad) and boom! It's a miracle and she's squealing with delight. I even ran a disk cleanup and wiped 3Gigs of space so that she could continue downloading the episode from Netflix.
I hear a lot of you people complain about being asked to do outrageous tech shit because you're a computer person but man, I sure love being the "tech guy". :D