Free shipping from $50 (US and Canada) · Ships in 3 business days · No minimums
Excited State

Collection

Off By One · Code & math

Off By One collects the bugs, proofs and late-night commits every programmer and math major recognizes. Rubber ducks, exercises left to the reader and code that worked once and never again. Wear the stack trace with pride.

AllGamingLab GradeOff By OneDeep FieldFuture TensePure FormAncientsPayloadSite BThe RiftGame NightInsert CoinTall TalesLights OutCampus LifeBrain FoodLoud & ClearGood CompanyField NotesDeep WaterGrow LightDeep TimeForecastPassportVital SignsShop ClassGame Day
Preview onDefaultCaseDeskmatBottleNotebookStickersCoastersKeychainWall printPhone standHeadphone standController stand
StyleAllIllustratedBadges & stampsFull-bleed artMade to touchTypographicSortFeaturedNewPrice ↑Price ↓

53 designs, page 2 of 3 · shown on Acrylic Keychain

GRADED ON A CURVEI AM THE LEFT TAILUVPRINTS.US
Off By One· Keychain

Graded on a Curve

$9 · from $8

LOOPVARSITY RECURSION. SEE: LOOP PENNANTUVPRINTS.US
Off By One· Keychain

Recursion Pennant

$9 · from $8

99.9% UPTIMETHE 0.1% IS HAPPENING RIGHT NOWUVPRINTS.US
Off By One· Keychain

99.9% Uptime

$9 · from $8

V - E + F = 220 - 30 + 12. CHECKS OUT.UVPRINTS.USnew
Off By One· Keychain

V - E + F = 2

$9 · from $8

ABCNONEMPTY INTERSECTIONWHAT I STUDIED ∩ WHAT WAS ASKEDUVPRINTS.USnew
Off By One· Keychain

Nonempty Intersection

$9 · from $8

SAVED, PROBABLYBACKED UP TO THE SAME FLOPPYUVPRINTS.USTextured
Off By One· Keychain

Saved Probably Stamp

$9 · from $8

RUNS ON SILICONAND CAFFEINEUVPRINTS.US
Off By One· Keychain

Runs on Silicon

$9 · from $8

PI, SLICED3.14159 AND COUNTING. NO END.UVPRINTS.US
Off By One· Keychain

Pi Sliced Label

$9 · from $8

123STRONG PASSWORDKEPT ON A STICKY NOTE, FOR SAFETYUVPRINTS.US
Off By One· Keychain

Strong Password

$9 · from $8

3 A.M. INCIDENT DIVISIONON CALLUVPRINTS.US
Off By One· Keychain

On Call Crest

$9 · from $8

{ }SENIOR DEBUGGERBILLS HOURLY, PAID IN BATHWATERUVPRINTS.US
Off By One· Keychain

Senior Debugger

$9 · from $8

FLOATING POINT BY HAND3.141592. TRUNCATED, NOT ROUNDED.UVPRINTS.US
Off By One· Keychain

Floating Point By Hand

$9 · from $8

nt1lognnnlognn²2ⁿIT WORKED FOR SMALL NTHEN N GREW. SO DID 2^N.UVPRINTS.US
Off By One· Keychain

Worked for Small n

$9 · from $8

FLIP FLIP FITINSERTION PROCEDURE V3UVPRINTS.US
Off By One· Keychain

Flip Flip Fit Patch

$9 · from $8

LAST KEYBOARDI'LL EVER BUYTHE FOURTH ONE THIS YEARUVPRINTS.US
Off By One· Keychain

Last Keyboard Ever

$9 · from $8

LEFT TO READERTHE PROOF IS TRIVIAL. QED.UVPRINTS.USTextured
Off By One· Keychain

Left To Reader Seal

$9 · from $8

CHRONICALLY OVERFITMEMORIZED THE PRACTICE EXAMUVPRINTS.US
Off By One· Keychain

Chronically Overfit

$9 · from $8

PAIR PROGRAMMINGSHE TYPES. I APOLOGIZE IN THE PR.UVPRINTS.US
Off By One· Keychain

Pair Programming

$9 · from $8

SURVIVED STATSGRADED ON THIS VERY CURVEUVPRINTS.USTextured
Off By One· Keychain

Survived Stats Seal

$9 · from $8

MERGE CONFLICTRESOLVED BY KEEPING BOTHUVPRINTS.USTextured
Off By One· Keychain

Merge Conflict Stamp

$9 · from $8

2 × 2 ≈ 3.99THREE SIG FIGS IS A LIFESTYLEUVPRINTS.US
Off By One· Keychain

2 × 2 ≈ 3.99

$9 · from $8

FORCE PUSHEDON A FRIDAY. TO MAIN. MY BADUVPRINTS.US
Off By One· Keychain

Force Pushed on Friday

$9 · from $8

KLEIN BOTTLENO INSIDE. DO NOT FILL.UVPRINTS.US
Off By One· Keychain

Klein Bottle Label

$9 · from $8

BIG O CLUBQUADRATIC. IT FINISHED.UVPRINTS.US
Off By One· Keychain

Big O Club Patch

$9 · from $8

Browse other categories

Gaming · Four game communitiesLab Grade · Science & engineeringDeep Field · Space & astronomyFuture Tense · Sci-fi & robotsPure Form · Abstract & generativeAncients · For the Dota 2 crowdPayload · For the Overwatch crowdSite B · For the Counter-Strike crowdThe Rift · For the League crowdGame Night · Board games & puzzlesInsert Coin · Retro tech & pixelsTall Tales · Myth & fantasyLights Out · Spooky & darkCampus Life · College survivalBrain Food · Food & coffeeLoud & Clear · Music & soundGood Company · Pets & animalsField Notes · Nature & outdoorsDeep Water · Ocean & marineGrow Light · Plants & gardenDeep Time · Dinosaurs & fossilsForecast · Weather & seasonsPassport · Travel & transitVital Signs · Medicine & anatomyShop Class · Tools & makingGame Day · Sports & rec