How often have you burnt your fingers holding a scalding, overfilled cup of coffee in a disposable cup?
Keep one of these coffee cup cosies in your bag or purse so that it's handy next time you need a take away hot drink.
I also keep one in a reusable cup that I keep handy. Although they often have a ribbed silicon band to make holding the cup more comfortable, I still find the cup can get uncomfortably hot.