Hari Raya, the holiday at the end of Ramadan, the Muslim fasting month, started yesterday. In Malaysia it's called Hari Raya but in most other places they say Eid ul-Fitr which is Arabic for end of Ramadan.
Apart from the prayers, it's a time where people visit their family and friends, eat too much, and generally have a good time. Traditionally, you must also ask forgiveness from everyone so you can start the new year afresh.
There are 2 customs here in Malaysia that I haven't seen in Indonesia and my brother hasn't seen in Saudi Arabia.
First, there are fireworks and firecrackers going off all over the place. I asked one of my pals why they were setting off bangers, and he said it was for good luck. Now this is a Chinese New Year custom that started when villagers in old China chased away an evil monster called the Nien with firecrackers. Today the bangs commemorate this and chase away bad luck and evil spirits in general.
Second, people hand out ang pows, little envelopes filled with money. This is also a Chinese New Year custom. However, the Chinese ang pows packets are red (because red is lucky and also the monster Nien was afraid of red) whereas the Muslim ang pow is green which symbolises paradise, and/or blue which is also auspicious.
Au and Target celebrated yesterday with a hole rost chikkun. But that's purely a family affair.
PS the card at the top is from Greetings 123. The ang pow packet below is an old one I picked up from somewhere.