diff --git a/TODO b/TODO
index 9fec892..b648c6e 100644
--- a/TODO
+++ b/TODO
@@ -2,6 +2,7 @@ Code that could be included:
 * http://github.com/l0b0/qr2scad
 * http://github.com/l0b0/img2scad
 * http://github.com/l0b0/OpenSCAD-Minimizer
+* http://www.thingiverse.com/thing:4656
 
 Integrate these better:
 * bitmap