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  • hats and caps

  • Sheldon Number 53 Dad Hat The Vengeance Formulation

  • $28.95
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  • hats and caps

  • Sheldon Number 73 Hat The Thespian Catalyst Cap

  • $28.95
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  • sheldon t-shirts

  • Sheldon Number 73 T-Shirt, Favorite Number Tee

  • $20.95 – $29.95Price range: $20.95 through $29.95
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  • sheldon t-shirts

  • Sheldon Opti Blocks T-Shirt, The Work Song Nanocluster

  • $21.95 – $29.95Price range: $21.95 through $29.95
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  • Sheldon Penrose Triangles T-Shirt, Big Bang Fans Gift

  • $21.95 – $29.95Price range: $21.95 through $29.95
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  • sheldon t-shirts

  • Sheldon Photon Collision T-Shirt, Geology Method Shirt

  • $21.95 – $29.95Price range: $21.95 through $29.95
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  • mouse pads

  • Sheldon Physics Math Mouse Pad with Wrist Rest

  • $39.95
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  • hats and caps

  • Sheldon Pi Day Math Lovers Hat

  • $28.95
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  • mouse pads

  • Sheldon Pi Math Mouse Pad with Wrist Rest

  • $39.95
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  • sheldon t-shirts

  • Sheldon Prehistoric Monsters Tee, The Cooper Extraction

  • $21.95 – $29.95Price range: $21.95 through $29.95
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  • hats and caps

  • Sheldon Recycle Symbol Hat

  • $28.95
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  • sheldon t-shirts

  • Sheldon Red Lantern Corps T-Shirt — “Precious Fragmentation” Fan Tee

  • $21.95 – $29.95Price range: $21.95 through $29.95
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  • hats and caps

  • Sheldon Red Lantern Hat

  • $28.95
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  • mugs

  • Sheldon Red T-Rex Dinosaur 11 oz 15 oz Mugs

  • $18.95 – $21.95Price range: $18.95 through $21.95
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  • mugs

  • Sheldon Robot Evolution 11 oz and 15 oz Mugs

  • $18.95 – $21.95Price range: $18.95 through $21.95
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  • sheldon t-shirts

  • Sheldon Robot Evolution T-Shirt, The March of Progress

  • $20.95 – $29.95Price range: $20.95 through $29.95
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  • mugs

  • Sheldon Roboticus Carpalium 11 oz and 15 oz Mugs

  • $18.95 – $21.95Price range: $18.95 through $21.95
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  • sheldon t-shirts

  • Sheldon Roboticus Carpalium T-Shirt Work Song Nanocluster Tee

  • $21.95 – $29.95Price range: $21.95 through $29.95
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  • sheldon t-shirts

  • Sheldon Robots The Geology Methodology T-Shirt

  • $21.95 – $29.95Price range: $21.95 through $29.95
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  • hats and caps

  • Sheldon Rubics Cube Melting Hat

  • $28.95
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  • mugs

  • Sheldon Rubics Cube Melting Hot Beverage Mugs

  • $18.95 – $21.95Price range: $18.95 through $21.95
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  • sheldon t-shirts

  • Sheldon Rubics Cube Melting T-Shirt — BB Fan Gift Tee

  • $20.95 – $29.95Price range: $20.95 through $29.95
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  • mugs

  • Sheldon Space Robots Silhouettes Mugs

  • $22.95 – $24.95Price range: $22.95 through $24.95
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  • mugs

  • Sheldon Spaceman Invader 11 oz and 15 oz Mugs

  • $18.95 – $21.95Price range: $18.95 through $21.95
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