When Screws Come Loose, I'm Right There

I love my humble, handy screwdriver. Recently I've used it to tighten:

-the knob on a kettle lid.
-the toilet seat onto the bowl.
-a doorknob-plate onto the door.
-a child's tandem bike attachment on the back of my bike.

I also like Allen wrenches and pliers, but I'm not much good with a hammer.