Wait staff trays are typically large circular disks used to serve drinks and/or food to people in restaurants, bars, and other hospitality industry businesses.

[1] When the device is open, two slots can be accessed into which a waitperson may secure their two inside fingers,[1][2] similar to how a flip-flop structurally attaches itself between the toes of the foot to counter the large stresses place upon it.

[10] The Safetray product's arrangement creates a strong cantilever advantage for the waitperson to allow them additional control over torque caused by items placed in various locations around the tray.

[13] In August 2010, seeking to secure financing from a panel of venture capitalists, Grieve appeared with the Safetray device on a Dragons' Den-style "Brand of the Future" competition at the Edinburgh International Marketing Festival.

[15][19] Bill Jamieson, writer for The Scotsman and a judge at the competition, noted that the product was a step towards making drink service trays in hotels and bars spill-proof.

[15] The Safetray device lost the competition to a company that turns discarded plastic into chairs, lighting, and other eco-focused products.