Child-proofing is the first thing I'd think of. Not wanting to walk 2-3 times I still remember carrying loads of stuff just by their cables and I'll spare you my memories as Janitor on a school for kids aged 4-12
"you'll have to devise some means of making your parts easy to attach to lego pieces - might have to adapt some bricks to fix to the steppers for example"Do you have an example of that ?
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