Possible Clues:

• Revolutionary American flag and tree
• Spongy-textured wood
• Wood that means 'raft' in Spanish
• Wood that means "raft" in Spanish
• Ultralight plane material
• Model's makeup, often
• Tree that's Spanish for 'raft'
• Bring up a plank of wood
• Wood for model gliders
• A piece of cake being raised in a wood