Ganesha Chathurthi or Vinyaka Chathurthi or Pillayar Satthi - however you call it, is a big festival in India. Especially in the states of Karnataka, Tamilnadu and Maharashtra it is indeed one of the biggest festivals, with huge idols of the elephant-faced lord placed all over the city, all month long.
In the past few years in AZ, I used to go to the temple and take part in their celebration also called the 'puja'. This time round, while I was vacation in the NE, I saw a Ganesha idol in one of the grocery stores there. I though, my good old AZ must have it as well, and let me see if I can celebrate the festival. Also a friend of mine called me over for the Gauri habba - the festival of Ganesha's mother. This gave me more motivation to do it different this time.
And there I went on to do the Ganesha Chathurthi at home, inviting a lot of people. It was a good one, and I felt happy doing it! I also made prasadham (kala channa sundal, vermicelli payasam, and aam vade)