Where can i buy cheap deco stuff for kids' birthday parties?

You may be able to do so online and google under "party". Alternatively, through friends, Carousell, and perhaps social media like Facebook. Personally, I do have suppliers for such, you may wish to contact me or browse through my Facebook - Vanessa Teo ([email protected]), my Carousell (carousell.com/vanessa.teo) or call me at 969 969 65 for more information.