A bagful of glassy playthings. Lose them at your peril
The origins of the phrase 'to lose your marbles' are a little uncertain themselves. In the 19th century 'marbles' was used to mean 'personal stuff' – from the French 'meubles', meaning 'furniture'. So perhaps it has something to do with losing your mental furniture. Who cares? We made these clinking, silky marbles for you to play with. Roll them, throw them, hoard them, fiddle with them, do whatever tickles your fancy.