This floor lounge chair is generated from a vein growth simulation in leaves. The algorithm is derives from this paper. The parts are milled from 21mm birch plywood.
To build your own, you need:
2x 45cmx45cm 21mm Plywood for the backrest and seat
1x 50cmx60cm 21mm Plywood for both feet
Mill all paths completely through as outline paths, except the pockets on seat and backrest. Mill them inside the path and 15-16mm deep. For a better fit, you might also want to widen the pockets from 21mm to maybe 22mm. Glue seat, backrest and legs together with wood glue, use your favorite finish (I used lineseed oil varnish) and you're done :)
The chair is rather sturdy, but still be carefull with the front edge of the seat. That definitly is the weakest point of the chair and it will not stand a body's weight.