click on the decorations and they will follow your mouse. press space to drop. If they are on the tree, they will stick, otherwise they disappear. Remix to add your own decorations, make them fall and break if you drop them on the ground, etc. Simple example using clones.
The Tree comes from http://xochi.info/art/svg/flowers/tree-christmas-xmas-flower-flora-xochi-info-art-christmas-clip-art-clipart-clipartist-net-clipartist-net-openclipart-org-commons-wikimedia-org-collection-downloads-openclipart-org-scalable-vector-grap/
