How to spend less while working?

We work to earn money, but working tend to cost us money too. Here are some real ideas to reduce the cost of going to work.
Travel the cheapest way Use public transport or look for cheaper parking near your office. Better still, car pool with friends and colleagues.

Stay longer hours in office if there's nothing else to do. You'll skip the peak traffic, save electricity cost at home, less likely to waste your time in front of the tv or shopping and polish your working experience for a promotion.

Pack lunch from home  Lunch take up a portion of our spending and packing from home may be a cost saving measure for a family. 

Make coffee and milo from office pantry Just drink it even if it's nescafe.

Eat as much meeting refreshment items as you could and skip lunch.

Eating out? Go in a group where someone else drives. 

Block shopping websites on your laptop. Delete shopping app on your mobile.

Wear the same fashion every 10 days.

Reduce one makeup item this month. Start with eye shadow color.

I don't think anyone can do all these although you would really save quite a bit.  Could you?