Small piece of furniture, usually made of plastic, which you place under a desk or table and rest your feet on to make it more comfortable to sit.
Fellowes Foot Rest Under Desk - Office Suites Under Desk Foot Rest Ergonomic Foot Rest with 3 Height

Fellowes Foot Rest Under Desk - Office Suites Under Desk Foot Rest Ergonomic Foot Rest with 3 Height Adjustable Positions & Antibacterial Technology - Foot Rest Stool for Office & Home - Black

Fellowes
£44.99