The Wind Tube

You can find a video about this here https://youtu.be/VUo_TeD6yRk

but you are probably quite likely to need to see these videos for full description of coils,electronics and general construction see
https://youtu.be/KhxADsxtiCA
https://youtu.be/zfD8-2_CmqM
https://youtu.be/TgjgU5Vy3T4

you are going to need 16 10mm by 3mm circular magnets, some magnet wire and 7 skate bearings too - oh and some M8 washers - 12 in fact