Auxiliary shelf for shopping carts

A shelf that is adapted for engaging the cargo basket of a shopping cart, the cargo basket having a frame made of metal wire, the frame having a forward edge of a length and a rear edge of a rear edge length, the rear edge length being longer than the length or the forward edge, the cargo basket further having sides that extend from the rear edge to the forward edge, the cargo basket the being supported from a cart frame that includes casters, the cart frame further having a push handle that is attached to the cart frame at a location near the rear edge, so that a user may push the shopping cart using the push handle, the shelf comprising:

• a single, generally rigid planar platform having a leading edge of a leading edge length and an aft edge of an aft edge length, the platform having spaced apart sides that extend from the aft edge to the leading edge;
• the platform further comprising a pair of spaced apart end hooks that extend away from the aft edge and down from the leading edge of the platform, each end hook terminating in an end hook tip;
• each of the sides of the platform having opposing side hooks, each side hook extending away from a respective side and further extending down and terminating in a side hook tip that lies below aft edge of the platform, so that the shelf attaches to the frame of the cargo basket by engaging the forward edge of cargo basket with the end hooks, and engaging the sides of the cargo basket with the sidehooks.