A neighourhood event is a great way of raising publicity about your project and building greater community in your area.  If the location of your project lends itself to hosting a 'big lunch' for your community, why not link up with 1,000s of other communities around UK on 5 June and organise a local event? There are lots of free resources on www.thebiglunch.com or www.streetsalive.org.uk  - celebrate the spring and maybe even the Royal Wedding??