You'll need a flat desk surface (which can be anything, like a solid core door), adjustable- and desk-height table legs (you'll find both kinds at IKEA), assorted hardware, and tools like a drill ...

COFO JSF Table serves as adjustable desk, dining table, or low table Height adjusts smoothly from 62.5cm to 99.4cm with LED display Includes magnetic storage, USB ports, and solid wood options ...