Pop-Up Rain Barrel
This collapsible rain barrel collects gallons of water in a portable, puncture-resistant tub. The 34-, 50-, or 74-gallon PVC barrel features a removable debris filter and overflow tap, and a metal zipper to access stored water. When empty, it collapses to a manageable 7 pounds for storage and transport.
$89 and up, from Greenhome.
For more ideas on how to conseve water around the home aand garden, read Going with the Flow.