contrivance

any improvised arrangement for temporary use

an elaborate or deceitful scheme contrived to deceive or evade

“his testimony was just a contrivance to throw us off the track”

a device or control that is very useful for a particular job

the act of devising something

an artificial or unnatural or obviously contrived arrangement of details or parts etc.

“the plot contained too many improbable contrivances to be believable”

the faculty of contriving; inventive skill

“his skillful contrivance of answers to every problem”