well... for me eating raw bud is a waste... but if you live in a wonderful land where there is plenty of it, enjoy...

If the theme of the party is weed, you would make plenty of food with weed (cakes, brownies, firecrackers), drinks with weed (green dragon + some "drinkable" thing, like fuzzy drinks, fruit juices), and lots of ways for smoke (bongs, streamrollers, joints, gravity bongs, pipes, etc).
Lots of stoner music, like pink floyd, bob marley, etc...
Remember you will need a lot of food for the munchies (and they shall not be made with weed, or it will became a snowball... eat->become more stoned->eat more->become more stoned...)... some cushions, as with so much weed people will need it... well... i dont remember anything else...
Anyway, good luck, and afterwards let us know how it was! :thumbsup::rastasmoke: