When I was running the restaurant many years ago I had the good fortune of working with Laura Mack, our pastry chef. We were constantly sharing tips and shortcuts with each other. She introduced me to the juicer pictured.
I will quite often rely on a small hand reamer. But that's only good for a tablespoon or two of juice. If I need more than that I pull out the electric machine and with hardly any effort am able to juice as much as I need.
As my husband and I became empty nesters I've resorted to this small citrus juicer for fresh squeezed orange and grapefruit juice. I could never afford one of those expensive juicers and quite honestly they look like a lot of trouble to clean and I do not like dissembling and cleaning machines. So this juicer is perfect for the two of us and quite frankly I think it would accomodate a family of four just as well.
These juicers can be found on the kitchen equipment aisle at the grocery store. In fact just last week I saw them on the aisle and they are still only 19.99. They are too good to be true. I store mine in a drawer closeby because it gets used so frequently. Juice oranges, lemons, limes, grapefruit. One reminder - fruit yields more juice when it is at room temperature.