Safety Push Pin

A push pin, comprising:

• a main body having:
• a head with a central axis, a trough that extends outwardly in a direction substantially perpendicular to the central axis, and two cradles defined therein;
• a pin body having:
• a pin, two axles, and a thumb-actuator nub;
• and
• an elastic loop looped around the trough and the pin, wherein:
• a first of the two axles snaps into a first of the cradles;
• a second of the two axles snaps into a second of the cradles;
• and
• the elastic loop biases the pin body toward a stowed position in which the pin of the pin body is stowed in the trough of the main body.

A push pin, comprising:

• a main body having:
• a head with a central axis, a trough that extends outwardly in a direction substantially perpendicular to the central axis, and two cradles defined therein;
• a pin body having:
• a pin, two axles, and a thumb-actuator nub;
• and
• a torsion spring having a helical portion, a first end, and a second end with the helical portion slipped over one of the two axles, wherein:
• the first end of the torsion spring engages with the main body;
• the second end of the torsion spring rests against the thumb-actuator nub;
• a first of the two axles snaps into a first of the cradles;
• a second of the two axles snaps into a second of the cradles;
• and
• the torsion spring biases the pin body toward a stowed position in which the pin of the pin body is stowed in the trough of the main body.