Online rental services like these are a timesaver for some people who can't get to their local store (or don't have one nearby).
While this does require more time than simply copying a list you find online, having a list customized to your family's unique needs can be a great timesaver.
This is a huge timesaver if you can cut accurately with it.
It's not an absolute necessity, but a bead board is a wonderful timesaver for anyone interested in making beaded jewelry on a regular basis.
Using a template service like this can be a great timesaver if you just want to get your website up and running with all the glitz and smoothness of Flash.