Possible Clues:

• Disc with edge half-destroyed -- these things don't last
• Collectible paper items
• They're short-lived, coming from border in record time
• Record time to cross border and other trivial details
• Things that last only a short time
• Things that exist for only a short time
• Short-lived everyday items
• One passing through border in record time?
• Things meant to be used and then thrown away
• Collections including pamphlets and posters