I dragged a desk in one of the classrooms at my high school to produce a dragging sound. Metal on carpet. The sound at the end is the desk bumping against another desk.
Held the mic up to the desk drawer and shuffled around things looking for something. Not much to it. Recorded with a $30 mic from target. A samson m10. Recorded in audacity.
A wide variety of twanging sounds made by plucking the edge of a ruler held against a flat desktop. Includes some interesting rising and falling glissando effects created by moving the ruler while it is vibrating.