Jumbo Box A lot of wood in a box! We make Jumbo Boxes from wooden material that we can’t use for any of our other products. In the 260 x 330 x 450mm box you are likely to find a combination of blocks, sheets, sticks, triangles, dowels and random pieces of balsa and ply wood perfect keeping little (or big) hands busy. Perfect for Kindies, Playgroups, Childcare and Early Learning Centres the material supplied is easy to glue, hammer, drill and paint into whatever can be imagined!