IKEA - FLISAT Children's desk, assembled and ready to go. Adjustable height and flat/tilt feature. Nice little desk, has some wear and tear from kiddo. See photos. Sells for $129 at IKEA, yours for a fraction.
IKEA description below:
“Three different heights, a top that tilts and a holder for MÅLA drawing paper roll. The desk is as practical for arts and crafts as for homework. You might say it grows with the task. Just like your child.”