Catch! calls the Once-ler.

He let something fall. It’s a Truffula seed. The last one of all! You’re in charge of the last of the Truffula Seeds. And Truffula Trees are what everyone needs. Plant a new Truffula. Treat it with care. Give it clean water. And feed it fresh air. Grow a forest. Protect it from axes that hack. Then the Lorax and all of his friends may come back.

The Once-ler’s house is brought to you by Jason Allemann‘s girlfriend, who built this with his advice and collection.

Via The Living Brick