Oh yeah, I remember those. Also making jeans into a skirt by cutting open the inseams and crotch. (You could either make a miniskirt or short skirt by filling in the front and back triangles with denim from the lower legs of the jeans, or else keep the skirt full length by sewing in triangles of bandanna fabric.)
Crocheted granny-square vest, generally in 100% acrylic yarn. Lord, those things were fugly.
The real hippie ethos is to shun mass-produced things and make your own, because you’ve dropped out of conventional society.
Yup. I remember teaming up with an elementary-school friend (I was born in '63) to sell our homemade love-bead jewelry to the “big kids” in front of the post office.
And I remember making tie-dyed clothing in galvanized tubs in the yard, with those boxes of powdered RIT brand dye. (Today’s “neo-hippie” tie-dye styles in vivid neon colors using Procion MX-type fiber reactive dyes instead of the old all-purpose dyes, bright and pretty though they may be, do NOT look the same as original hippie tie-dye.)
And we weren’t at all a hippie family (though I did have one friend in fifth grade who lived with her mom and brother in a commune). But aspects of hippie style seeped in everywhere those days.
Oh, I had forgotten bandanas. Those were multi-purpose tools, kind of like non-sticky duct tape. It’s a pot holder, it’s a pouch, it’s a headband. . . (Not that kind of pot - that would go in the pouch.)
By the time the vests had filtered down to high school/junior high they were mostly rows of triple crochet, and all one color. My Mom was thrilled that there was finally a teenage fashion that didn’t appall her and that she could whip up herself. I think she made me three. That and Dad contributing an old fatigue jacket were about as in-style as I ever got.
Apologies for the junior-modding, but I would have thought this thread would have been shipped off to Cafe Society by now.
The John Lennon glasses are good, especially tinted. We called them granny glasses. Hip hugger jeans with any kind of wide belt. Tee shirts with a political message, such as War is not Healthy for Children and Other Living Things, or Free the Chicago Seven.
Nobody actually (ok, very few) wore headbands and love beads. (Since you say you’re going for authenticity.) Ditto about painting flowers on your face. The uniform, that we thought was so “different” lol, could sort have been worn by either male or female. Throw on a pair of thick-soled sandals or shoes (Earth shoes were big) and attach a roach clip to your belt and you’ve got it.
And, really, the media used the term hippies, mostly. We called ourselves Freaks.
Oh yeah, part your hair in the middle. Have a good time. 
Sorry, but I have to nit-pick a little here. College is where I hooked up with fellow Freaks. Thnx
If you can’t find a roach clip, slide a big bobby pin onto your belt. It works. 
Jeans and long hair (for guys) had already become popular among young people, although they usually still did tuck in their shirts, at least if it was a conventional oxford type shirt.
I don’t think young guys really stopped tucking in their shirts until the 1990s when baggy, low jeans arrived. I can see how, when clothes are sized or styled extra large, tucking in shirts doesn’t really work. (I once bought a polo shirt that came down to mid-thigh, which I eventually wore exactly zero times.)
To be fair, this might have been true about a lot of hippies, but I haven’t heard any reliable statements to the effect that the Beatles, or other famous musicians who lost their coordinated stage outfits and grew their beards out actually cut back on showers.
I say, if you wear a tie-dyed T-shirt, a string of little multicolored beads, a macrame vest, granny glasses, long straight hair, a HEADBAND, and a flower, preferably the humble daisy, in your hair - these simple accessories speak volumes. It is an iconic look. I mean. What else could you be except a damn smelly hippie?? Don’t forget to flash the peace signe (and maybe draw a big old peace sign on your t-shirt with a magic marker). Sometimes bell bottoms, denim or otherwise, can be found in a thrift store. Sandals are a must!
So did I. In the 1970s.