The secret shape is a "rectangle".
The secret office supply is a "stapler".
The secret fruit is an "orange".
The secret kitchen appliance is a "pan".
The secret vegetable is an "onion".
The secret tool is a "saw".
The secret food is a "sausage".
The secret flower is a "tulip".
The secret clothing is a "glove".
The secret instrument is a "trumpet".