Crafty Conundrum

So for the last few months or so I've been throwing an idea around in my head.  I'd like to try to make some extra money by opening an online store.  I taught Pre-K and 1st grade and fell in love with creating a lot of worksheets and lessons myself.  I've been told they're pretty good (but I'm not sure if they really are...)Anyway, I've heard good things about Teachers pay Teachers but only netting 60% of the profit seems pretty steep to me. Of course, then you know teachers are going to find you.  My other thought is Etsy.  I'm kind of in love with Etsy and setting up an Etsy shop would be all kinds of fun.  But who really goes on Etsy to buy classroom stuff?  I'm torn!  Then, of course,  there's the question of whether or not the profit margin is even worth it.  I taught for a few years, I know how expensive classroom stuff is.  How much would I be willing to pay when it may just be easy easy enough to make it myself...?

Anywho, that's the idea that's taking up WAY too much brain space these days.  Can you tell I'm creativity starved?  I really need to make some time to craft...