My latest project, a holder for all the collets that came with my spindle. I’m using 6mm magnets to hold the lid on. It works great!

On the collet side, for US customers there not needed, a 1/4 and 1/8 collet is all you need. I got the full pack because it was only $11 more with the spindle and because I was not sure where I would buy bits from. But in hindsight I would skip it and spend the money on bits.