Tom Tiddler's ground

Tom Tiddler's ground

1. A children's game in which a player (dubbed "Tom Tiddler") must catch other players who try to invade or cross into their area to "steal" their "gold." I remember being kids and playing games like Tom Tiddler's round or hopscotch; nowadays, kids just sit around on their phones watching videos online.
2. By extension, an area or situation in which one may make significant profits but is or might be at risk or in danger. The region has become something of a Tom Tiddler's ground for the three major countries surrounding it, each one claiming of its resources as their own. The deregulation created a Tom Tiddler's ground for corporations who exploited every avenue possible to maximize profits, though such an unstable market eventually lead to one of the largest economic crashes in history.
See also: ground, tom

Tom Tiddler's ground

a place where money or profit is readily made.
Tom Tiddler's ground was the name of a children's game in which one of the players, named Tom Tiddler, marked out their territory by drawing a line on the ground. The other players ran over this line calling out ‘We're on Tom Tiddler's ground, picking up gold and silver’. They were then chased by Tom Tiddler and the first (or, sometimes, the last) to be caught took his or her place.
See also: ground, tom
References in classic literature ?
I am here, my soul's delight, upon Tom Tiddler's ground, picking up the demnition gold and silver.
Roy Harper, Renfrew Ferry, Glasgow, Sep 18DAPPER in rather apt cricketing whites, Roy Harper opened with Tom Tiddler's Ground ``written for the kids who are still innocent.