Here is a handy "gadget" that has saved us a lot of money through our frugal years. (We're still in them, by the way.) This folding wooden clothes rack was a bridal shower gift, and it stands in our living room all winter (and often in the spring and fall, as well!).
Unlike many of the things I thought I "needed" when we got married, this clothes rack has been used countless times. If our heat is blowing, there is likely clothes drying over the vent. Not only does it save dryer costs, it puts much-needed moisture in the air!
During the coldest months, a load dries in less than 24 hours. In the spring or fall, when the heat isn't used as much, the clothes takes about 24 hours to dry. Longer than 24 hours concerns me, because of mold. Thankfully, if the clothes would take that long to dry in the house, it usually means it's a nice day outside, and I can use my clothesline!
I do prefer my outdoor clothesline. It's nice to be able to wash several loads in one day, and bring in soft, sun-kissed clothes or diapers. But for me, this wooden rack is a winter-time must-have!
Do note that your location, humidity, and outdoor temperatures will determine how well this will work for you!
For more: See Jennifer's page about drying her clothes indoors!