Speaking of which........ don't spend dollars buying a cone holder. Instead take a plastic soda bottle, water bottles and cut bottom out. Put cone under the bottle pulling thread through top hole and there you could. Thread your machines and sew, sew, sew.
I also use my round one gallon water plastic jugs and cut the top at first rim and use it to catch my snippets and such. The top part I use as a dome for germinating new seeds into plants. I cover top part with sarah wrap and put it over container I have seed pods and let the greenhouse do it's thing. When it starts sprouting stems/leaves I take the piece of sarah wrap off and let it grow some more. When it is about to reach the top of the dome I transplant it into a pot such as empty coffee cans and the like and when that grows some more I use a larger container if it warrants it.