Just a heads up that if you're interested in finding keywords for Etsy, well Niche Laboratory will find these too.
It hooks up to Etsy (and a few other related sites) to dig out keyword opportunities in the arts and crafts niche.
To get the best keywords it's best to download Niche Laboratory Pro. My hosting account isn't working too well when it comes to the external web service calls but you'll have no such restrictions when you use the Windows PC version of Niche Laboratory.
Niche website building is a lot harder these days due to the difficulty in ranking in so many niches. But if you start an Etsy business then you can just hop along and use their own domain's authority to rank for lucrative keywords a niche site's got no hope of ranking for!
By the way Etsy is really nice way of earning a few extra dollars. My sister in law has an Etsy stuffed animals business and does quite well on it. The downside is that it's not really scaleable, so she's never gonna make big money from it. But it's a few extra dollars here and there.
Another acquaintance of mine had a picture frame business. That seemed pretty successful as there was a whole production line going at one stage.
Well good luck with any Etsy ventures you might have, and the keyword research to go with it. Remember that the majority of Etsy members will have no clue about keyword research or search engine rankings, so you'll have a big advantage if you use these as well as other techniques for doing well on the site.
Building a product-based website? The Product Laboratory will help find you brainstorm product ideas.