It is a bit like "etc" but not quite. It is also a bit like "and stuff."
You know, it'll be easier to just put examples:
We have to finish the project and suches!
It is time to chop the onions and suches!
Synonyms: And junk
We have to clear out the car and junk!
Let's go buy the cardboard and junk!
Note: "And junk" is NOT an insult. It is also more similar to "and stuff" than "and suches."