If it's not a groundbreaking idea that can be monetized, particularly one that's both helpful yet easy for others to replicate as you say... I'd be tempted to o

If it's not a groundbreaking idea that can be monetized, particularly one that's both helpful yet easy for others to replicate as you say... I'd be tempted to open-source it if it were my baby, but the call is yours alone. You can always attempt to patent the idea and sell it, or if it really is groundbreaking, try to turn it into a product or a service. That's how many startups get off the ground.