My daily budget is s$40 per day. Depending on exchange rates that's a bit over $30 USD. That makes about s$20 for a roof over the head, and s$20 for food, transportation, and everything else. That might not sound like a lot, but by traveling and budgeting wisely you can really make it stretch. Of course, it always helps when the best stuff its cheap or free.
Take food, for which I have about s$10 per day. Singapore is known for great food and a wide variety. Of course this is true of fancy and touristy areas. But the Singapore gem, hawker centers - local food hubs with dozens of little stands that serve dozens of dishes from a variety of ethnicities. My favorites have been the spicy Indian dishes - great stuff!
Here is a sampling:
Mangosteen fruit! so sweet, but the outer-purple part stains, be careful
Dried-peppered beef, greens, eggplant, curry, and rice
Fried desserts including fried plantain!
The infamous durians - no way to describe the smell and taste, someday, you will just have to try it
Chicken, cabbage and rice

L
Lamb, chicken, and rice boiled in leaves
Indian - mutton, veggies of some type and curry and rice
A chicken and shrimp combo with rice
Does anyone notice a commonality here? Recall, the Asian Civilization Museum blog? Yes, rice is definitely a staple food here!
Singapore fun fact day 15 - the Esplande Performing Arts Center is called the Durian by locals because of its design and local popularity of the fruit