Can I do anything to save these?

@florianpirvulet adhesives will not be strong enough for this. you would need to proxmarte the broken arts as tightly as possible to each other. Then fabricate a small piece of sheetmetal and apply it as a bridge across the two broken pieces. Use some small screws to attach the bracket. Finally, get some 2 part epoxy resin. Mix it according to the label and pour it over your broken pieces. The epoxy will harden to keep all those parts connected. Now, sounds easy enough but the problem will be, that you really don't want the resin all over the plastic. You will need to somehow create a form of some sort to ensure you just get the resin over the broken parts in enough thickness to be effective.

If this description is to abstract to follow, post some pictures with the broken part moved as closely as possible to where it broke off. I can then edit it and hopefully make more sense of what I am referring to.