LEGO base trolley

I wanted a trolley to allow my daughter to put her Lego friends shops on. I had three 'retro' 10x10 road baseboard from the 1980s so I supplemented these with a green baseboard to make a 2 x 3 arrangement.

There are a few parts to this trolley:

Corner piece v1.0 - This is the corner fitting that you screw the wooden batons and the castors to.

Corner brace - Technically you don't need these, but they make the joints strong and square.

Lego clips (0mm and 2mm) - These allow you to hol