You can make palm trees out of used carpet rolls to create a tropical ambience for your next luau party. These trees will be more unique than those you can buy at a party store. They will also serve as a conversation starter to get the party rolling. Most carpet stores will give you the used cardboard rolls for free if you ask.
Thrust the cardboard carpet roll deeply into a bucket of gravel until it stands up on its own freely, perpendicular to the ground.
Cut the bottoms off of a pack of brown paper lunch bags. Slip each bag, one at a time, over the top of the roll and scrunch it down. Keep adding bags until you reach the top of the carpet roll. This will add a realistic looking texture to the tree trunk.
Using scissors, cut the fabric off of a cheap dollar-store umbrella.
Put the umbrella handle into the top of the carpet roll.
Cut palm fronds out of the green poster board. Make them large enough to cover each prong of the umbrella. Cutting them freehand, without following a stencil, can give them a more natural, realistic look.
Add glue to the top of each umbrella prong and stick a palm frond on top of each prong so that they entirely cover each prong. Allow to dry.
Bend the fronds downward, lengthwise, to help conceal the prongs of the umbrella a bit.
Keep the palm trees away from open flames like grills and tiki torches as they are highly flammable.