Possible Clues:

• Tinder, maybe, wasn't reliable or practical
• Registered an interest in job in the orchard around island to a degree
• Turned to use backless cooker, perhaps explosive
• Useful bit of software gets invented
• Directed song with a gentle piano introduction
• Was relevant
• I may cut into fruit Penny laid on
• Put to practical use, program wasn't accurate
• Put on
• Paid close attention -- pages after article told a story