Heat Moldable Boots,
and the gel ankle tube.
About 8 inches long and 3 inches wide it is composed of a stockinette fabric exterior magically lined with medical gel. This tube is the savior of many skating careers; protecting skin, and helping boots fit correctly.
For example, you have a pair of boots whose rough top rubs your leg skin raw. I even read that Michele Kwan had calluses on her legs from her skates (this is called mechanical dermatoses). Simply slip the magical gel tube so it covers the affected area--problem solved!
What if the heels of your boots, or just the heel in one boot is just a little too wide leading to your foot slipping around? Slip the tube over your heel! (I usually use a stocking over the tube to keep it smooth).
I actually don't wait until mine wear out to replace them (and they will wear out after a long, long time) I keep an extra one in stock in case I lose one.
What about calluses on the side of the foot, or the toes, or the heels? I've found that for small calluses that the small burn gel pads from the drugstore work very well.
So there's your helpful skating tip for the day!