Walmart offers the iHome Rechargeable Speaker for iPhone, iPad, and iPod, model no. ID48BVC, for $19.98. Opt for in-store pickup to dodge the $4.97 shipping fee. That's tied with last week's mention and the lowest price we could find now by $19. It lets you simultaneously charge and play music from your device and features a universal dock to fit 30-pin Apple devices, sliding cover, and built-in Li-ion rechargeable battery.
B&H Photo Video offers the Xuma Waterproof Pouch for iPhone 5 and 5s, model no. I5-WPC, for $4.49 with free shipping. That's the lowest total price we could find by $4. It's purportedly waterproof up to 6.5 feet and features a double seal enclosure and lanyard.
REI Outlet offers the Topeak iPhone Drybag for iPhone 4/4S in White or Black for $3.73. Opt for in-store pickup to avoid the $5.99 shipping fee. That's the lowest price we could find by a buck. It features a clear touch window, QuickClick mounting system, and sonically welded seams.