Brifters on the cheap...
Seem to be a lot of posts in the various threads regarding fixing or adapting flatbar shifters, brakes levers, etc.
Noting that there seems to be a glut of Shimano 7,8,and 9spd Brifters on Amazon for cheap.
Search on Shimano EF65 to get started... others searches probably get other variant. But basic point is that a complete set of namebrand brifters with full cable sets for about $28-30 bucks is sweet!