Answer :
She appeared very nonchalant with a well turned out standard brompton, devoid of the gizmos sported by her husband's machine.
you'd need to use nonchalantly as an adjective, and just make the sentence as complicated as you can, making sure it makes sense & doens't turn into a run on :)
Benjamin nonchalantly took a cookie from the jar, even though his mother told him "no sweets before" dinner, and his tattle-tale sister was spying on him from behind the stair bannister"
Benjamin nonchalantly took a cookie from the jar, even though his mother told him "no sweets before" dinner, and his tattle-tale sister was spying on him from behind the stair bannister"
