Snow Joe via eBay offers its Sun Joe Aqua Joe 1-Touch Adjustable Hose Nozzle 2-Pack for $4.99 with free shipping. That's the lowest price we could find now by $11, although we saw it for a buck less ten days ago. They feature a smart throttle adjustable spray and rubberized grip.
Note: Colors will be chosen at random.
You very likely are putting your laptop battery into an early grave.