to one's heart's content

For a single five-cent glass of beer one may eat to one's heart's content the free lunch.

and so on to one's heart's content.

Preston, for Alan, was like some great, overstuffed piñata that could be bashed to one's heart's content, because the piñata would never even notice.

While one can debate the point to one's heart's content, the dispute between Russia and Ukraine was, at the end of the day, one between a supplier who wanted more money, and a customer who was unwilling to pay up.