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Hastings entrepreneur Randy Stenger has taken a creative business concept from the playground to the Shark Tank — and has emerged with an offer to help expand his company, Extreme Sandbox.

Stenger started his business, in which adults pay to play with construction equipment like bulldozers and excavators, in 2012. This month, he appeared on the ABC reality show "Shark Tank" to pitch Extreme Sandbox's expansion, garnering an offer of $150,000 from two of the show's investors — Mark Cuban and Kevin O'Leary — to buy a 20 percent stake in the company.

He plans to open a second Extreme Sandbox this spring near Dallas. Because of the investment of the "sharks," he'll be able to move faster with the expansion, he said.