How to hammer a nail in more easily

Use a clothespin to hold a nail steady while hammering. It will also prevent you from hitting your finger since you are not holding the nail.

Another use for a hair straightener.

You can use a hair straightener as an iron for those shirts that have collars that wrinkle easily. Sometimes a regular iron can not iron out the wrinkles on a collar but a hair straightener can do it more easily.