When you're trying to convey a general sense of things that are not specific, you might use the phrases "this and that," "here and there," or "odds and ends." Alternatively, you could say "bits and pieces," "everything and anything," "all kinds of things," or "various and sundry." These phrases all express the idea of a diverse collection of items that don't necessarily have a clear connection to one another. In some cases, you might also use the terms "miscellaneous" or "assorted" to describe a group of things that don't fit neatly into any particular category. Whatever words you might choose, they should help to emphasize the idea of a hodgepodge of various items.