Good tips! I actually do a lot of them, like putting change into a jar. When I take it in to be counted, I usually have about $50+ in there.
One thing I do is use coupons. If I'm going to buy something or I'm going out to eat, I search the internet for promo codes. Lots of times, if you sign up with a restaurant on their site, they send you something free around your birthday and/or a free appetizer or something for signing up.
I read that many people are eating at home more now and interest in cooking and recipes has gone way up.