I just received the desktop onager but have not put it together since it will be a gift for my teenage son at Christmas. I'm writing this review to let you know just how it arrives and what is in the box.
Hurray, it arrived quickly! Nicely boxed in a standard carton but not over packaged with bright header or plastic packaging, just the parts you need in the cardboard box complete with saw dust from milling. The pieces are pre-cut with a die onto what looks like poplar, not oak as pictured. They are not cut all the way through the wood so need to be scored, broken away and sanded. These are not Tinkertoys you do have a bit of work involved but that's all part of the process. Some items are prepared in advance such as the balls, leather pad etc. The instructions are printed in color with clear photos and directions.
I hope it proves to be a sturdy item, it looks like good old fashioned fun with hard wood pieces. If you enjoy the idea of simple wooden toys, are not put off by the lack of flashy packaging and like the thought of buying from a small US company then I think it is worth your while.
Get more detail about The Desktop Onager: An Awesome all Wood and Twine War Machine.