I've made a replacement cap/lid for B.Box bottle.
I have two such bottles and in both the part broke and there's no possible replacement available for buying, so I've decided to design it myself.
It took around 5 iterations and finally it's quite ok. It's a bit tight, so the parent should help with opening and closing, but it finally works.

Please mind the printing orientation, so the parts with bolts that click in place are printed horizontally to strengthen the construction.