What are some ideas of celebrating LO's 1st bday?

Frankly, your main star for the day, your baby, will not be able to remember much from this celebration. It is more of a gathering for you, your family and friends. So a place with lots of space for the little ones to gather and run around, some food and drinks for the adults, a great photographer to capture the moments (so that you can show your baby when he/she grows up) would be good. If not, a small and intimate celebration with the immediate families and closed friends would be nice and cozy too. Just my two cents.