Adjustable Laptop Stand with removable mouse stand. Can rearrange the stand in dozens of ways. See post on Best Buy for more info:
Anthrodesk brand: https://www.bestbuy.ca/en-ca/product/anthrodesk-laptop-stand-with-adjustable-folding-ergonomic-design-stand-for-ultrabook-netbook-or-tablet/10749046
Dimensions of laptop space: 16 inches long x 10.25 inches wide