Possible Clues:

• Eradicates, with "out"
• What I'm from Barcelona has a "Collection" of
• Makeup of some sheets
• Sticky roll?
• Office assortment
• Stickers on envelopes
• Things collected from street in the morning -- empty pots
• Brings one's foot down heavily on the envelope
• One puts one's foot down for them on the post
• Philatelists study them