Question:

I have a lot of different yarns and not a lot of cash. I'd like to crochet or knit somethings up to sell on Etsy. My thing is with the size hooks and needles I have these items might work up a little thicker than is advisable in the summer.

Do you think they'll still sell well (people will just buy them for later) or do you think I should invest in some different hook sizes?

You will be able to sell things that people like no matter the season. Does that make much sense. I make lots of the little amigurimi things. I do see on etsy that those sell pretty good as well. since they are toys.

Awesome. Thanks!

Yep, what Rosebud said. People's tastes are so varied you shouldn't have a problem at all.
Post a link here when you get ready to sell.