I put my brooder in the bathroom and strung the heat lamp up over one of those expandable shower rods. DO NOT USE THE CORD to hang it; use twine or cord or something tied to the wires which act as a "cover" over the lamp itself. It just takes some finagling. Also, confession time: I never used a thermometer (they only read air temp, anyway, and infrared heat lamps don't heat the air) and just gauged how warm the chicks were by their behaviour. If they all hang out by the lamp and peep A LOT, huddled together, they're too cold. If they go to the other corners away from the lamp and lay down with their little wings out, they're too warm.
It made the bathroom really dusty and like a hot-house, but it was the only place I could put them that was #1, easy to keep clean, and #2, able to keep the dogs and cats out even when I had to go to work all day away from home. But the toilet was the most handy place to sit and watch them for hours.....