For the box of things that should be repaired you could use Salvage
salvage transitive verb
: to save (something valuable or important) : to prevent the loss of (something)
Retrieved July 8, 2014
But this definition of salvage might be better
2. a. the act of saving any goods or property in danger of damage or destruction
Dictionary.com, "salvage," in Collins English Dictionary - Complete & Unabridged 10th Edition. Source location: HarperCollins Publishers.
http://dictionary.reference.com. Accessed: July 08, 2014.
For the box of things that should not be repaired you could uses Spares
a spare thing, part, etc., as an extra tire for emergency use.
Dictionary.com, "Spares," in Dictionary.com Unabridged.Source location: Random House, Inc.
http://dictionary.reference.com.Accessed: July 08, 2014.