Ha! I have never bought fancy sunglasses, exactly for the same reason: they get lost anyhow! (But I get quality prescription glasses - and use them for several years. Eyes are worth taking care of.)
We won't lose our land line, because we're in a sort of "pocket" area where cell phones just don't work well, and my husband works frequently from home. However, I'm sparing in my cell phone use to make up for it.
I do a whole lot of second-hand shopping, especially for clothing and furniture. I always have - my children practically grew up in second-hand clothes, and they looked just like their friends. You might see what thrift stores you have near you. If they're good ones, look for good quality items and use your imagination and creativity with them. Go for a more classic look rather than a trendy one. (There is a technique for thrift-store shopping; you're likely to find winter clothes during the summer, and that wonderful lamp when you're not looking for it. Make a list of what you'd like to find and give yourself time to fine those things.)
Do the sensible things like turning lights off, not letting the water run, adjusting your thermostat as much as you can stand it.
Cheapest isn't always the most frugal! You want to evaluate how much use you can get out of an item or service and come up with a "cost per use" estimate.
We go out to eat much less now, dining instead at "Chez Home" where the ambiance is free.
We drive older model cars and keep them in good shape. They're basically fuel-efficient, anyhow. I plan my driving schedule so I don't use up gas I don't need to.
I stopped looking at ads years ago. That means I have to ask my friends where the good deals are when I need to buy something specific, but ignoring all the "Buy me!" plugs has saved me a whole lot of money.
Whenever possible, we use generic medications instead of brand-name ones, if the doctor approves.
We don't take trendy vacations. (My friends say, "What! You've NEVER been on a cruise?") We do some traveling, and my husband is a nut about finding good deals on transportation and lodging. Sometimes he gets too economical but, generally speaking, he does well. When we go out of town, we always have plans to do things, and we don't need a fancy hotel room because we just use it as a base to touch down at night.
Some people are great at getting good deals with coupons. I don't do that
very much, because coupons seem to make me buy things I don't need. But you'd do well to see if it will work for you.
One thing I've found helpful is realizing that if I'm frugal about things that can be "frugalized," I may be able to do some things that might otherwise be impossible. We'll be doing some major work in the yard this summer, because I've saved up cash for it. Yay!
One of the best frugal ideas - and one that makes all the other ideas work - is to be happy with what you have and not go around envying your friends and neighbors. If you start to feel very poor and deprived, count your blessings, and schedule something fun that's within your budget.