Arizona Desert

z = (x-y)/(sin(x)+1/cos(y))

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Reminds me of Sedona, and all the westerns filmed there.

Bed o' Nails

z = sin(4y)+cos(4x)

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Looks like nails. Actually, this is the simple egg carton plot graphed at a different scale.

Celery Row

z = sin(x)cos(y)/(x-y)

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Mathematical veggies.

Corrugated V-Roof

z = abs(sin(2x)-y)

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Like the inexpensive, corrugated metal roofs covering many Balinese homes, including that of my in-laws.

Egg Carton

z = sin(x/2)+cos(y/2)

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Who doesn't like eggs?

Fancy Lapels

z = arcsec(sin(1/x)-cos(1/y))

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Sartorial aesthetics.

Lawn Chair

z = x^2-y^5+cos(arcsin(cos(y)+sin(x)))

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Add a simple frame, and this would make a fine garden chair, with holes to enhance air circulation.

Lettuce Garden

z = 1/(sin(x)-cos(y))

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More veggies!

Plastic Chair

z = -abs(x)+2x^4-abs(x^2*y^3)

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Complex relation. Simple object.

Squarish Honeycomb

z = cos(arcsin(cos(y)+sin(x)))

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Very nice.

But how to devise a 3D function that would graph as a true hexagonal honey comb?

Three Fingers

z = log(sin(1.1x)-y)

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Cool 3D instance of the basic log curve.

Tree Stumps

z = arcsin(cos(x)+sin(y))

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After the harvest, there are stumps.

Wrinkled Paper

z = x-y+tan(x)-cos(8x-sin(2y))

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Delightfully strange.