We have seen network extenders over powerlines, but how about one that does that and provide a WLAN connection on the remote end?  The Aztech 85Mbps HomePlug Powerline wireless extender (HL105EW) is a Homeplug with 802.11G using Intellon 85Mbps Turbo and Infineon Wireless LAN that transforms your in-house power circuit into networking infrastructure and a WLAN connection. 

Specifications:

Protocol/Standards
    HomePlug 1.0 specification, IEEE 802.3 10/100 Ethernet (100Mbps) and IEEE 802.3u Fast Ethernet Compliant
    10/100 Mbps AutoMDI/MDIx Support
    85Mbps Homeplug 1.0 compatible
    IEEE 802.11g Wireless Specifications
Range
    up to 400 metres via Wireless LAN
    up to 200 metres via homeplug
Transmission Rate
    up to 54Mbps via Wireless LAN
    up to 85Mbps via homeplug
Modulation Support
    DSSS (Direct Sequence Spread Spectrum) Wireless LAN standard
    OFDM 256/64/16, DQPSK, DBPSK and ROBO Modulation Scheme
Frequency Band
    4.3 Mhz to 20.9 Mhz band
Security
    WEP (Wired Equivalent Privacy) via Wireless LAN
    56 bit DES Encryption with key management for secure powerline communications (Utilise Windows 98SE, 2000, ME, XP to enable encryption)
Quality of Service
    Forward Error Correction (FEC) support
    Channel Adaptation ensures that signal integrity is maintained even under harsh noise environment
    CSMA/CA with prioritisation and ARQ for reliable delivery of Ethernet packets via Packet Encapsulation
    Four Level prioritised random access method
    Segment bursting and contention-free access ensures high throughput while maintaining low latency response and jitter performance

Hardware
    Intellon INT5500 Integrated Single-chip Powerline Network Transceiver
    Intellon INT1200 Analog Front End IC
    Infineon Wildpass Wireless 11b/g chipset solution
   
Platform Support
    O/S Independent with TCP/IP protocol installed

Power Supply
    Switch Mode 100V-240V Supply for worldwide plugs
   

Aztech 85Mbps HomePlug Powerline wireless extender (HL105EW) is available for around USD$190.