Hi, I am always lurking through Walmart and Home Depot etc. looking for Stuff That Could Become Arduino Parts.
I found this "Waterproof floating Lantern" at Walmart and used it in a project HERE: It could be used for lots of other Arduino-based projects that need an outdoor case, batteries and maybe an on-off switch. Like remote temperature / humidity / Other sensing with an nRF24L01 radio, Wildlike sensor / Camera control. Etc. Etc. If anyone makes a project based on that case, please let me know and I'll add it to the ArduinoInfo.Info WIKI