What's your favorite tool on your bench?

I recently found a handy tool that has helped so much. Bondic plastic welding kit. I've used it for filling some gaps but mostly for clear parts. A small bead of glue from one side and five seconds of light from the opposite end. And voila! The windshield or rear window are on, stay on and best of all, it only takes a few seconds. The glue won't dry u til you apply the light so you can spread the blue around until you're ready.