Cut back on extra driving - I find I take the long way after I pick up Bear and have had a stressful day. It added up to about $8 in gas each week of extra driving.
Stop drinking coffee - yes it's hard and yes it's a crazy money sucking delicious addiction BUT it was costing me $28 per week because I don't own a coffee pot. I switched to tea and only spend $2.50 for 2 weeks.
Switch Grocery Stores - we used to shop at Hannaford for about $115/week. Then we gave in and switched to Save-a-lot and, go figure, we saved a lot. We brought our weekly bill down $45 for three! And any additional stuff like tp, trash bags, toothbrushes, etc, we get at the dollar store which is conveniently located next to the grocery store - WIN!
Make yourself aware of your budget - open up excel and put your weekly paycheck in, add up all your bills and divide by 4 now subtract that from your paycheck. That is what you have to work with for food, gas and any other expenses. What I did in order to "trick" myself into saving money is I divided my car payment by 3 instead of 4 - now at the end of the month I have $80 in my savings account - genius!
Buy Bulk Where Applicable - if you have a large family or lots of space, buying in bulk is smart. I would only buy canned and paper goods as others go bad fast.
Make healthier choices - when it came to grocery shopping we were being tempted to buy the largest box if cookies because it was cheapest - reality is, we do not need to be eating all those cookies. So we buy the small and make it last or dont buy them at all!
Diaper Butts - try store brand diapers. I like target 144 diapers for $28 and it lasts us around 15 days.
Don't carry the debit card around - I have found this is a big no-no I have been giving myself a cash budget and it's been working so far. I spend less and have found myself not exceeding my budget.
Hope these help!