There is a niche for everything.

So I was searching on Etsy for a spinning wheel, which I'm not going to buy because they are not cheap. I'm still terrible at spinning (although I've gotten better! I'll post soon) and quite honestly the spindle interests me, but the wheel I'm still so so on it.

But I did find this.

For those of you too lazy to click, it is a cup holder custom made to the spinning wheel you own. And that's not the only one, every possible wheel that I've heard of (and many that I haven't) this person has made a cup holder for all of these wheels. And they cost about $25 each. Crazy. It seems this etsy person has created a market for making cupholders for spinning wheels.

I guess if you have an idea, you should implement it.