Giving the fact that Halloween is just around the corner, I was thinking on the idea of manufacturing Halloween costumes 12 months in advance, preparing for next year's Halloween shopping season.
People create their own costumes all the time, just look at the people manufacturing their cosplay stuff for cosplay conventions, you can do the same for Halloween, the ones made for kids are much easier to design and create so that would be an even better niche.
I was thinking on starting a small business on this, start manufacturing handmade Halloween costumes for children this winter with my family creating something like 200 pieces while simultaneously creating a website targeting SEO based keywords that are only trending on Halloween season so when the shopping madness starts next year I would be in top positions with my website, ready to sell the hell out of my creations.
Of course, LidingDocks will play a big role in all of this and I will also publish my products here, but having a website already ready in top SERPs positions can be hugely productive.
If everything turns out good next year and I end up gaining a profit from this, maybe I can outsource the handmade part to manufacturers in China, buying everything at a much better price.