Wendy, once you have a dyebath up and running, it is very addictive to just add another piece - a bit like eating chocolates
Although if you are using Procion Dyes there is a limited window of oportunity about 3-4 hours I think, If you are using Dylon cold-water dyes, it keeps going as long as you can find fabric to soak it up
Which, I believe, is why some dyer ended up dyeing undies - it could be Ami Simms