OK we have discussed the under-seat light many times and the problems therein. Personally I purchased the Honda switched unit and for me it works OK.
On my SWing the deep glovebox on the left side of gauges, the box is deep and totally BLACK! Difficult to see into during the day and impossible at night. I load this up with camera, cell phone, cell phone charger etc. during a trip and decided a light might be nice
I was at Ross Dress for Less with my wife last week (yeah I know, right?) anyway I found a pack of stick-on LED lights, 3 lights for $5.99 USD. Hey for 6 bucks could I go wrong? Anyway I installed one in the glove-box after going out after dark and determining the best placement. It is not a perfect solution but certainly helps and provides some much-needed light.
This is the front of the light, just tap it to turn on.
This is the backside showing the self-stick tape.
Here is the picture of the light installed. Kind of hard to see but it is on the underside of the glove-box door towards the rear.
Some may have a better idea but this was a CHEAP option
I used one of these in the glove-box and one in my shed. Leaves me a third that would work under-seat if I decide I need it!
My other thought was take a spray can of white paint and plaster the inside with it...