pocket money; personal spending money; money paid out of one's own pocket
A noun for money someone has personally available or pays privately, often in the pattern ポケットマネーで, 'with one's own money.'
He bought the team new uniforms with his own money.
Please pay for your own drinks during the trip with your personal spending money.
The president bought drinks for the staff with his own pocket money.
He paid the repair costs out of his own pocket.