I found that the overhead light was too bright for reasonable control with enlarging paper, and marginal even with the Fomalux contact-speed paper, so I ended up bodging together a lightbox using a clamp lamp and a cardboard box, with a couple of strips of cardstock so that I can mount a filter over the "aperture" (a rough-cut hole a couple of inches across in one side of the box). That got me to where typical exposures for a reasonably-exposed negative are in the 20-30 second range on enlarging paper---enough time for a little bit of dodging, but if I wanted to do something elaborate I'd need a lower-wattage bulb or a ND filter.