Here is another cool gift idea for those of you who have a thing or two for marble machines. William Le’s Perpetual Marble Machine has a wood and stainless steel construction. As the ball rolls down, it is launched all the way back to the top level and the process keeps going for 6 hour son battery.
More gadgets like this: here
This machine has a 2-pin magnetic USB charger cable and 5 balls. It measures 22x20x12 cm (LxHxW). The above video shows it in action.
[HT]
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