We organized our first workshop in Helsinki 2018-07-09 where parents and kids explore motors and create robots together.
Library doesn't have extension cord in room, better bring own.
Need usb cords/hubs with buttons. Much easier to turn of, then to unplug.
Long basic wires. Each one should have 4-7 long (30cm+) m-m wires.
Bring more simple lego parts 2×1, 4×1, etc.
Motors should have wires fixed (maybe even soldered). Many times they were disconnected on inaccurate moves.
For electronics/lego boxes: make pictures where each part should be placed. Will reduce cleanup time.
Think how everyone could keep his build (or at least bigger part of it).
Pre-program arduinos, so they could be used for basic operations.
Motor shields/drivers are highly required.