Isn't it such fun when you see white or grey fleece magically turn into beautiful colours
I love seeing, with acid dyes, how the water is clear afterwards - we could all probably be dunked for witchcraft
When I dyed my big jumper a few months ago I dyed the yarn, not the batts, and I did it all in one go so I would have the same colour throughout. I am very lucky though to have the old Baby Burco boiler my Dad used to use for dipping the turkey eggs before they went into the incubators. It's maybe a foot across and 18" deep, with an element under the bottom and holds up to a kilo of yarn. This means I can dye anywhere with a power supply, and don't have to use my kitchen which is not such a good idea, mixing dyes with foodstuffs.
But I'm only too well aware that finding a Burco or Baby Burco is a rarity, unless you haunt the dispersal sales.
I also have a cheap stainless steel stewpot, which was surprisingly cheap in a shop sale, but it holds less than the BB.
I also dye in the oven, using steel turkey trays from Tesco, well covered with foil. Those let me do rainbow and patterned dyeing.
Just seen your new post Sallyitn - I am positively anally retentive in recording my weights and proportions, largely because I used to sell hand-dyed yarn, so had to be able to reproduce the colours fairly accurately. I have some records of colours achieved by using this number of drips of this colour and that number of drips of that colour
I'm not so bad now as I'm just doing one offs for myself.