Personal Columns in some newspapers: They usually began SWM or SWF then followed by several adjectives about yourself, and who you were looking for. If interested, people had to write in to a Box at the newspaper. You got the letters and then read the notes and called the ones you were interested in meeting. It was how I met my wife.
I went on a few dates that way, and one Halloween I went as a personal ad.
I also met my former spouse that way, through a New York Magazine ad. I’m not sure I’d recommend it, given how it all turned out!
No chrome and glass in my first few apartments. Bookshelves were made from cement blocks and boards. My first dining room table was a huge wooden cable spool…remember those?
Ha. I live my first apartment now. 
Wait, @thumper1…Were we roommates? I had the cable spool table and block and boards bookshelves too!
@anxiousmom Was your couch in the living room a former dorm twin bed?
Replacing the needle on the tonearm of your stereo. You bought the cartridge and did it yourself - the “diamond tipped” needles were the good ones!
Milk crates for storage/bookshelves anyone?
Speaking of record players, the 45s with the little plastic thingie in the hole. I wonder what those plastic thingies are called.
@doschicos milk crates were for record albums. They were just the right size. Believe it or not…we still,have the college milk crates…with albums!
How about Merimeko prints…
Waterbeds.
@HarvestMoon1 My sister and brother in law just got rid of their waterbed last year. Thank you for the visual of my less than svelte sixty something sister and brother in law trying to stay afloat. I’d almost forgotten. 
Jean Nate’, Noxema, Montgomery Wards, Speed Racer, Family Classics (for the Chicago area folk), Members Only jackets and perms…and when milk crates were mentioned, I also pictured my trunk for college from Venture.
@thumper1 Thanks for the reminder about the record storage. I sued them for that too. My kids won’t forgive me for getting rid of my album collection years ago. Too many cross country moves
Marimekko prints @thumper1 ! Did you see them at Target?
@amandakayak I did…but the ones at target are just not the same!!
They were called "adapters’'–and guess what? You can still buy some in the highly unlikely event you have ten 45’s and only a 33-1/3 spindle on your record player!
https://reverb.com/item/1083167-audio-additives-45-rpm-adapter-inserts-10-pack-new?_aid=pla&pla=1&gclid=CjwKEAjwtLO7BRDax4-I4_6G71USJAA6FjN1tD9EIOs0dglVZlLdQoym4Rsi5vLdzz7q7AqBGY8GcxoCg63w_wcB
This reminded me of the days when Broadway cast albums came as a set of 45’s. And when kids’ 45’s were often made of red translucent plastic. And when a tiny scratch on a record made it “skip”.
We have a fair amount of Merimekko at our house, because I have a Finn wanna be child. They have been around for ages, come out with new patterns all the time.
Thongs were flip flops.
Baby Chris dolls- my sister and I got the off brand ones one Christmas.
The Ed Sullivan Show- first saw the Beatles and hated their song. Decades later my H got me into their later, better stuff.
Red Light, Green Light in addition to already mentioned yard games. Tons of neighborhood kids to be able to play those until it got too dark to see.
Running through the mosquito fogger stuff when the truck came by.
Burning leaves.
One speed bicycles.
We each only owned ONE Barbie doll- and even made clothes for them.
The nickel candy bar.
Writing your name on the card in the library book and turning it in when you checked it out- the librarian would then stamp the due date on the slip inside the cover.
And the stamps the librarian would use to to mark the due date on the card- they were metal stamps with the dials so you could change the date.