Update: Deal over.
Shop-Vac 2.5-Gallon 2.5-Peak Horsepower AllAround EZ Series Wet/Dry Vacuum – Link 
You can currently snag this at Amazon for just $29.33!
This normally sells for $50-$60 and is now its lowest ever.
- Attached dolly with easy roll casters
- Wall mountable
- Top carry handle
- Wet or dry pick up
- Quiet operating