I'm the worlds worst at backing up stuff!
Over the years I've had tons of little prototype programs sitting there, and just, well, lost them, then only to think to myself one day if I need something "Oh, I have some code that'll do that", look, and its nowhere to be seen.
I'm like that in real life too, I'll have some bits of timber in the shed, they'll be there for weeks, and I'll be like "They are taking up room", so will chuck them out... Only to need them a week later, and have to trundle down to B&Q and pay for new stuff.
I recommend to everyone, dont be me, back all them little routines or test beds up on the odd chance you'll need them, cos its more then likely, you will!
And I say that you know, but I'll never learn myself, I'm my own worst enemy, I do promise myself I'll look into some sort of version control, where I can upload stuff to my VPS, which I've had for donkeys, and is the best place really as its for next to nowt, I just I never get around to it.
Dabz