S.P.A.R.E. Crate

S.P.A.R.E. Crates contain 250 Spare Parts.

Source
They can be obtained from the following:
 * Quest rewards
 * Cluckbox
 * Operation: Mechagon - The Mechoriginator
 * Prototypes for Inspiration
 * Prototypes for Profit
 * Rusty Tube


 * Mission rewards
 * Mech-mon
 * Why Spiders?


 * Other
 * Junkyard Tinkering

Currency for

 * Null Force Containment Unit
 * Titan Purification Protocols
 * Reactive Existence Battery
 * Null Force Cooling Unit
 * Targeted Purification Protocols
 * Enhanced Existence Capacitor
 * Null Force Nullifier
 * Enhanced Purification Protocols
 * Calibrated Existence Gauge