To clarify the color temp issue, actually most household and work light bulbs are under 3000 degrees Kelvin. Only pro lights designed for video and film are at 3200 degrees Kelvin which is the color temp video and film are balanced for, unless you're shooting Super8 film which is balanced for 3400 degrees Kelvin.(posted 9305 days ago)You can use gels to raise the color temp of household lights and the work lights to which you referred. Rosco makes their Cinegel series which can be used to precisely achieve 3200 degrees K. It's certainly cheaper to buy gels than to buy a pro lighting kit, even used.
You can also purchase photoflood bulbs which are balanced at 3200 K or 3400 K from your larger photo shops. They are cheap, but they do start to drop in color temp after about 3 or 4 hours. They are excellent for use in China lanterns.
A real cheap diffusion material available anywhere is white plastic garbage bags. Just keep it far enough from the lamp to avoid melting.
Hope this was helpful