I applied "SCAMPER" to the idea " Sink with a spin cycle - labeled with arrows so that it looks like the whole basin rotates on an axis."
Substitute - I focused on the "parody" aspect of "substitute" and came up with a sink that looks like a top loading washing machine, rectangular in shape with a middle pillar and a lid.
Combine - I combined the sink with the design of a birdbath ("Can I combine or merge it with other objects?") and decided the water would come from a hose outside, rather than mounting a faucet on it.
Adapt - "Is there something similar, but in a different context?" I thought of DJ's turntables that also rotate, and you could find a way to make the sink make music when rotated, or hold a record on the top and have it work as a joint record player and sink.
Magnify - Can it be made smaller? I came up with a "countertop" version at a smaller scale to wash delicates.
Put to other use - What else can it be used for? I looked at my "birdbath" drawing and saw that it looked like a wineglass. You could fill a wineglass with (colored?) liquid, find a way to make it rotate and add lighting from beneath, and make it into a pretty decorative lamp.
Eliminate - What's unnecessary or can be removed? Perhaps all that's important is the rotation mechanism, and an existing product can be used for the basin, such as a bucket.
Rearrange - Are there other layouts I can use? I changed the shape of the basin from a bowl to a flat donut - perhaps a thin layer of water can be used to submerge clothes laid flat, rather than the traditional method of submerging them.
HIT Matrix:
I chose the nearest available "product," my cat. This may not be a standard usage of a HIT matrix and I'm not sure if it will work. I'm also a little concerned I mixed up features/functional attributes... regardless, here's what we have:
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And here's a couple of ideas I came up with based on this:
Basin + night vision = Sink like the previous freestanding/rotating models with lights on it so you can do laundry in the dark, or to avoid walking into it and stubbing your toe.
Basin + warm = Bathtub that heats water after drawing it so you don't get cold in the bath.

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