Outside of dramatically rebudgeting or selling stuff, we would do whatever it took to earn income.
Here's a few things we did:
1) Our biggest source was starting a franchise outside of our 9-to-5 jobs. That brought DW home from her job at a very early age.
2) Outside of that and my job, I started a traditional consulting business and picked up a few accounts on the side doing accounting and legal stuff. Doing that quickly gave me the option to quit my job.
3) I didn't quit my job, but it give me the opportunity to buy out part of my employers (small businesses times two). That created job security and created an extra income whether I worked or not.
4) During this long period, we put every penny we had back into our businesses and we didn't save at all. It wasn't until about 13-14 yrs later that we finally wised-up and started investing. We are now finding that this is an awesome way to make money. Duh moment. Better late than never.
5) I remember we joined focus groups for money and would get paid about $100/hr, but were limited to the number of times we could do it.
6) We signed on with temp agencies to do extra work whenever we could.
7) We used to play Sprint - ATT - MCI long distance(way back when) off each other and would tell ATT for example that Sprint is offering us $50 if we switched to them. ATT would then offer us $60 for example and would actually mail us a check and we would switch for a month and then talk to MCI and so on.
8) Years ago we started a biz linking buyers and sellers. Basically we were a walking talking E-bay type biz. If someone said their cell phone bill was too high and were looking to switch, we would negotiate a better deal than what they had and tell the carrier to give me a cut or percentage of their monthly bill in exchange for driving business to them. We would do that with whatever can be legally bought or sold.
Seems like there were others, but these were a few that came to mind.