Minor Illusion

Duration: 1 minute
You create a sound or an image of an object. If
you create a sound, you chose it's volume, timbre
and all other characteristics. It can be continuous
or in intervals. If you create an image of an object
it must be no larger than a 5 ft cube. The image
can't create light, sound or other sensory effects.
Physical objects can pass through the illusion.
A creature can make an Investigation check
against your spell DC to see through the illusion.