Hello,
in the Flowers team, it takes around 7 hours to assemble a full Poppy humanoid creature.
Some people at Paris science museum organized in april a workshop with their visitors and they managed to have the platorm entirely assembled in 2 days with a group of 6-7 participants
Assembling only a part of the Poppy humanoid creature, like an arm, is a matter of 2 hours with students.
It is possible to print parts of the Poppy robot with home 3D printers like the MakerBot 2, see instructions on:
http://wiki.poppy-project.org/tutorial/how-to-print-poppy-on-a-replicator-2/
But a better quality will be reached with higher end printers.