This Mix and Match quiz challenges you to find pairs and opposites.
'Mix and Match' is the wording on signs that you sometimes see in shops where you can pick your own items in a range of colours, flavours etc.
English has many pairs of words ~ often as synonyms or antonyms ~ and which hang well together by their sound, because they alliterate or rhyme.
How many of these do you know, or would you recognise?
'Odds and sods' (Answer 3) has faintly rude overtones (un-proven, depending on what your hearer might think 'sod' means), and is probably the least formal version in what's already a clearly informal context.
You may also have met a related phrase 'flotsam and jetsam', referring to waste materials washed up on a beach by the tide. Technically, 'flotsam' = floating things, while 'jetsam' = items that have been thrown (e.g. overboard from ships, or off the land or maybe a pier); but by the time the sea has heaved them about, it probably makes little difference. Driftwood, such as a complete tree trunk, would presumably not count as 'jetsam'!