This is a film that won a few Sundance awards this year and is now available on hulu. It's about a chinese immigrant mother with two children struggling to get by, who ends up involved in a pyramid scheme. The kids wake up one day and find their mother isn't home, and try to support themselves by selling inventions that they make.
It's a very subdued film. It has excellent acting. It's sad, but the kids are so adorable that even if you generally don't like sad films you can make it throughout without getting too depressed. (The adorableness of the kids isn't overplayed or anything, it's just sort of innate to the actors).
Mild spoiler: The film is more of a portrait of a lifestyle than a narrative. There are no major character arcs. I was slightly disappointed because I approached it with more typical hollywood assumptions, not necessarily of a happy or sad ending, just assuming there would be more drama of some sort.