A retired toothbrush makes a great little cleaning tool for tight spaces, but only if you are able to approach the area from a parallel vantage point.
This simple modification lets you clean from a perpendicular approach as well.
Step 1: Supplies
an old toothbrush dedicated to scrubbing
a pot of boiling water
some needle nose pliers
Step 2: Submerge
Once the water gets boiling, submerge the old toothbrush in the boiling water for a few moments