Fila-Basket

What do you do with old 3mm filament when all your printers are taking 1.75mm filament?

Well you could weave a basket! How about this?

The base of the basket is of course 3D-printed -- it consists of a ring, and a insert.
To build the basket:
1) cut 11 strings of 3mm filament, ca 40cm long. (at some point I though it should be an odd number for weaving, and then I chose a prime number)
2) print the ring fila-basket-11r.stl and one inset fila-basket-11i-s.stl -- from the latter, you can break away some tiny support towers at the bottom side. (the fila-basket-11i.stl file is without the supports, if the support fails for you).
3) There are two sets of holes in the ring. Insert one end of each string into one of the upper holes. If they have a lose fit, push further, use a pair of pliers to squeeze the end, then pull back.
4) take one string and loop it around to approximately the opposite side, and insert it in one of the lower holes.
5) take the next string, pull it under the first one, and insert it into the next hole.
6) take the next string, pull it under then above, then fix its end.
7) and so on. You alternate under and above all the way until the end.
8) the basket is probably not exactly round or not exactly equal height on your first attempt. Squeeze and stretch the pattern to make everything equal.
9) insert the hub. It should have a tight snap fit, and all the ends of the strings that stick through the holes should disappear in the grooves underneath.