Did you get an allowance when you were younger? You may remember carefully rationing to get the most you could out of it. The allowance method works well for many people, and it can be an especially good tool for couples and families. A certain amount of money, agreed on by everyone, is given out to each family member as an allowance. Anyone can spend their allowance any way they want. There's no discussion or argument.
The allowance can include all variable expenses, including clothing, or it can be just lunch money and pocket change. Generally, the more personal variable expenses it includes, the better. And the allowances do not have to be the same. If gas is included in the allowance, for example, and you commute 30 miles to work and your spouse works two miles away, your allowances should be adjusted to reflect that.