Manually Adjustable Wooden Standing Desk by tjrwoodshop on Etsy
Comfort Knows No Limits – Height-Adjustable Desk Designs
Adjustable height desk for under $25 dollars. There's also a demo of the desk in action here https://www.youtube.com/watch?v=-CreRsPl-9U
BEKANT Desk sit/stand IKEA You can adjust the height of the table top electrically from 22" to 48" to ensure an ergonomic working position.
Adjustable Computer Desk | Polo's Furniture
DIY adjustable standing desk for under $100
Atelier Height Adjustable Desk
Sit + Stand Adjustable Desk - Industrial #westelm
Adjustable desk modeled after classic angled drafting tables. Study in style.