I'm still finding that it's far too easy to leave the indicators flashing.

The green repeaters are not really visible in bright light, and the clicking noise is too quiet. So here's a quick fix. First I cut a small triangle of self-adhesive orange lens repair tape and placed it between the repeater lights.......
So now it's more obvious where to look.
Next I used a hole punch to cut two circles of insulating tape, which are stuck on the indicator column in line of sight through the inner hole in the steering wheel spoke.....

This is drivers eye view, so when I can't see both circles in a straight line, I know the indicator stalk is not centred.
It works well.