Did you know that there is already a Global Internet of Things Day? There is one and actually it is today! http://iot2012.com/
Check the link to see if there is an IoT meeting taking place close to you and attend. If not, you can always spend this day playing with your Arduino (or any other favorite open hardware platform) and make it communicate to the Internet – make it send some data!
Those still being in Easter holidays, here are a few links interesting for reading and spending some time:
Happy Internet of Things Day!