lucky packet, noun phrase
A small, sealed package typically containing an assortment of sweets, trinkets, or other inexpensive items, popular among children for its element of surprise. Also used figuratively to refer to something of low value, or to a situation with an unpredictable outcome. Also attributive.
2010 writingstudio.co.za (DSAE Corpus)Every cast is like throwing one’s line into a lucky packet.
2016 timeslive.co.za (DSAE Corpus)You never knew what you were going to find, it was like a lucky packet.
A small, sealed package typically containing an assortment of sweets, trinkets, or other inexpensive items, popular among children for its element of surprise. Also used figuratively to refer to something of low value, or to a situation with an unpredictable outcome. Also attributive.

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