Well, that’s the million dollar question, isn’t it?
First, the way how NOT to do it: This will not come from people who can’t get their head off everyday work. Also, not from someone who is learned that innovation ideas comes only from R&D teams or Innovation Departments, or similar… Innovation Culture must exist and Innovation should have the positive surrounding in the organization.

Find T-shaped people and use them!
Try to find people that has knowledge in their every-day-work domain, but also in other topics. It can be sport, gardening,

Take some creative workshops
Do brainstorming – engage into creative process, do it in the right manner and it will produce results.

Assign consultants
Get external (or internal if possible) help in the phase of shaping the idea for customer – by making the Prototype – your innovator will need some help for sure.

Trends
Trend spotting, technology radars – small investigation in your industry.

Task forces
Teams that can come with ideas in small time frame.

Open-up!
Use Open Innovation Initiative and get the ideas from external participants.

and that’s for the start! 😉