Water-Venture Jurong Lake. The great thing about these sort of events is that it is that there is basically no committment involved. I show up, do a quick brief and it is pretty much just babysitting for the rest of the session.
Free and easy.
It is however, also the downside of such events. It lacks challenge. Nonethless, I got to have some time in the sun and it looks like I wasn't the only one.