contrivance

"My friend told me there was something in the box, but I didn't know what it was yet. "

"The cake recipe lists flour, sugar, and eggs as the main ingredients. "

" stranded in the woods, he fashioned a makeshift shelter from branches and leaves. "

"The graphic designer carefully prepared the mechanical for the company brochure. "

"The student accomplished the difficult math problem. "

"The teacher elaborated on the history of the Roman Empire, explaining many details about their daily life. "

"The flowers were artificial, and he thought them rather tacky."

"The objective of the science experiment was the smooth, grey rock. "

"It took him only twenty minutes to perform the task."

"The students designed posters for the school fair. "

"The certain success of the project was a relief to the team. "

"The general's strategy for defeating the enemy involved a multi-pronged attack. "