For balloon sculpting, do check out this page!! http://sg.theasianparent.com/party-balloon-sculptors-in-singapore/
Just to name a few from the website:
1. Bryan Tan 9872 7396
2. Hayden Chan 9828 9798
3. Jasmine Balloons 9738 6067
Magicians:
1. Jason Tan - 9876 5544
2. Magic of Markson - 9369 4164
3. Tricky Patrick - 9846 6609
Check out http://sg.theasianparent.com/party-magicians-in-singapore/ to find more contacts!!!
Sylvester - 96716779 - rates far cheaper than anyone else i have seen online