When mixing small quantities, I find a hand-held tool is easier and less messy. Just don't buy a cheap one that will burn out easily. Choose a powerful motor. I use
THIS ONE (U.S. option
HERE).
If the mixture becomes too thick, add a little extra milk to loosen it.
These cones can just stay uncovered at room temperature, for several days, without losing their crisp texture.
If you want to make cups, rather than cones, just drape the wannabe-cones over a small upside-down bowl, shape them, and let them air dry.
Metric kitchen scales are an inexpensive yet invaluable gadget to ensure accurate measurement of ingredients. Store them upright in a cupboard or over your worktop and they'll only take up a tiny bit of space. Click
HERE for the ones I use. For U.S. option click
HERE.