I have a couple of ways that make saving money easy for me.
The first is by having an automatic transfer set up so that each week a specified amount is sent from my checking account to a savings account. Right now we are saving for house repairs and to replace my husband's truck. So I set up two automated transfers. My husband gets paid on Thursday and the transfers are scheduled to take place every Monday. Both items are budgeted for weekly and I don't have to give it another thought.
The other way to save that is painless for me is putting any change we receive in a box. I never spend change. One of the first things I do when coming home from grocery shopping is to clean out my wallet of any change and depositing it into the box. Periodically I get the box out, roll the change and deposit it into my checking account. I usually will then send it to one of my designated savings accounts, or if a budgeted account has had more expenses than I had foreseen, I'll use the change to build that back up.
Both savings ways are easy for me and require little effort. It's amazing how quickly both will add up!