edo pattern-samekomon #2271
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The image depicts an edo-era pattern called "same-komon" or "鮫小紋"which looks like a shark skin.The "same" in Japanese means shark in English.

Source Yamachem

 More Textures
Pool Table #175
 Wall  CC BY-SA 3.0

This makes me wanna shoot some pool! Sweet green pool table pattern.

Source Caveman

Colorful Floral Background #479
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Colorful Floral Background

Source GDJ

Patern dots #241
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Pattern repeating background 48x48

Source Keistutis

Prismatic Polka Dots 3 No Background@2X #529
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Prismatic Polka Dots 3 No Background

Source GDJ

Elegant Grid #316
 Wall  CC BY-SA 3.0

This is a hot one. Small, sharp and unique.

Source GraphicsWall

Small Crosses@2X #116
 Stripes  CC BY-SA 3.0

Sharp pixel pattern looking like some sort of fabric.

Source Dmitry

Diamond pattern (colour 2) #2284
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From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Retro Circles Background 4@2X #421
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Retro Circles Background 4

Source GDJ

Background pattern 266 #2068
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Remixed from a drawing in 'Some account of the Worshipful Company of Ironmongers', John Nicholl, 1866.

Source Firkin