Clue: Leaves in this, perhaps, soon after first light (3-4)
Answer: ASH-TRAY
Explanation: Leaves in this, perhaps, soon after first light (3-4)
After lighting a cigarette, burnt tobacco leaves would end up in an ash tray. 
*I thought there may be more to this clue, with ASH trees having leaves, and RAY = light, but I can't get any further than that, so assume it is a cryptic definition instead.