A Fistful of Radios

During pre-Christmas sale on Seeed Studio Bazaar  they offered these digital radio modules with the nRF24L01+ chip for only US$0.81 each. So I bought 10 of them outright :-)

What would YOU  suggest to do with them? Build a wireless flower life-support monitoring network? A mobile voice communications radio system? Retrofit them into talking toasters and robotic vacuum cleaners? Let me know!