Αυτό που κάποτε λέγαμε «άθυρμα».

‘she was the mistress and plaything of a wealthy businessman’
‘Treating people like pawns and playthings in your own private emotional board game is cruel and callous.’
‘He soon realizes that he is only a toy, a plaything for his enemy, kept alive as a showcase of human inferiority.’

Να δούμε κι αυτό:
be (like) putty in someone's hands
Be easily manipulated or dominated by someone:
‘he was putty in her hands from the beginning’
‘No one could call it a fast-moving film, but I was putty in its hands.’
‘Within moments, another blast of calming washes over me, totally reducing me to putty in her hands.’
‘I tell you, I would be putty in your hands if you were to be affectionate to me.’
‘But even formidable Marjory is putty in Rosemary 's hands.’
‘Naive, idealistic and terminally gullible, Hawke is putty in his hands.’