Crossword clues for Think up 5 letters:THINK1968 hit for 42-AcrossTHINKOffice sign.THINKSign on an office wall.THINKSomething to do twice?THINKCerebrate.THINKMuseTHINKAptly named Final Jeopardy! theme songTHINKBelieve.THINKKind of tankTHINKGet lost in a brown studyTHINKDo some cerebratingTHINKPopular office signTHINKSee 1-AcrossTHINKUse gray matterTHINKPut your mind to workTHINKType of tankTHINKDeliberateTHINKAssumeTHINK___ twice (reconsider).THINKCorporate mottoTHINKUse the beanTHINKConcentrate!THINKGet ideasTHINKUse your nogginTHINKUse one's headTHINKUse your headTHINKBrainstormTHINKWith 19-Across, reconsider ... or a hint to the starts of the five starred cluesTHINKUse one's beanTHINKFamous IBM office signTHINKExercise one's gray matterTHINKEnd of the observationTHINKC'mon, Aimee, ___! There's gotta be a good clue out there for this word ...THINKTry to remember!THINKIBM slogan that inspired an Apple sloganTHINKEND OF QUOTETHINKUse your brainTHINKIf I Only Had a Brain verbTHINKMotto for the office wall.THINKRack one's brainsTHINKBe reasonable?THINKOld IBM mottoTHINKGood motto for everyone.THINKSign in an office.THINKIBM's __ exhibitTHINKPonderTHINKJust _____!THINKEngage in cerebrationTHINKCogitateTHINKWith 61-Across, carefully consider ... or a clue to this puzzle's theme