1-Wire Sensors

Host Adaptors

Lots of Sensors

Temperature

The bare components for these are:

Humidity

Humidity + Temperature

Light

Liquid Flow Meters

Air Flow Meters

Solar Energy

Current

Big how-to page: http://www.nlcpr.com/kwhmonitor.php

1W Clamp Sensors:

A/D

Controlling Things

Etc

http://www.sheepwalkelectronics.co.uk/
http://www.hw-group.com/products/sensors/index_en.html