I sometimes toy with this idea, too, but I think I would work on it a little at a time from January to April, then just keep a record until things cool down again in October and catch it all up then.I have sometimes thought that I would like to try making a crochet temperature blanket when I retire. But that would mean it would be around the half way point in summer and a bit warm to work on.
I have a mix, but I actually had to go out and intentionally buy some plastic ones a few years back when I was doing tutoring at the college near here. Part of the gig was to sit-in in the lectures (that I'd already done before) and it was boring, so I would crochet. I kept dropping the metal ones on the hard floor of the classroom and everyone would turn and stare at me...Almost my hooks are aluminum (I think - they're the basic metal ones from the store). I do have a couple of plastic ones but I think I 'inherited' them, although I'm not sure from where. (I sure didn't buy them!!)
SD- I didn't realize tatting was done with needles! That's why the hooks made me think of you... I remember thinking in my very young days that I would love to learn how to make lace and tat... but you'll recall that back then there were no youtube tutorials, and that's not the kind of thing I could ever learn from a book. And now... now I have come to my senses and will just buy lace if I ever needed it!