Ephemora 

A fleeting, hard-to-define emotional sensation triggered by certain songs, places, or moments. Each experience of ephemora feels unique, though it can occasionally be felt again, often unpredictably. It isn’t tied to nostalgia or familiarity but arises spontaneously, leaving a subtle, lingering impression before fading.

I felt a strong ephemora when listening to Ventura Highway by America.

Ephemora by bentiB February 5, 2025

ephemeral 

1- Lasting for a markedly brief time: “There remain some truths too ephemeral to be captured in the cold pages of a court transcript” (Irving R. Kaufman).
2- Living or lasting only for a day, as certain plants or insects do.

"the ephemeral joys of childhood"; "a passing fancy"; "youth's transient beauty"; "love is transitory but at is eternal"; "fugacious blossoms"

ephemeral by phatmatt27 September 7, 2005

Ephemeral 

Lasting for a short period of time; typically one day.
Or
A short-lived experience.

The feeling was ephemeral.
The spring is ephemeral.
You have an ephemeral experience in life.

Ephemeral by ♥!Me!♥ April 6, 2015

ephemeralia 

Assorted objects that people tend to accumulate, like receipts and ticket stubs and tissues.

There was ephemeralia scattered all over the floor of her room.

ephemeralia by janine doe November 30, 2013

Ephemerabilia

Objects like groan tubes, bouncy balls and light-up wands you buy in novelty shops that seem great at the time but later you realise is just worthless shite.

Fred:...Why did I buy this Glowing Mickey Ears light up wand in Disneyworld again?
Lucas: Dude, I told you when you in the shop, that's totally just ephemerabilia.

Ephemerabilia by Rebsicle July 24, 2015

ephemera 

How some psycho girls think of boys: used only for a short time.

"Hi. I'm Caroline. I like that boy. I'll add him to my list of ephemeras."

ephemera by Andy MON September 7, 2007

ephemorabilia 

Items which usually have a short lifespan, or fleeting existence, but which become keepsakes. Different from souvenirs or memorabiliia (which usually have an intentional association with a place of origin, or an event) ephemorabilia was never intended as such.

Mary kept a cigar box full of quirky ephemorabilia from her travels: a vial full of snow, pressed leaves and flowers, the shed skin of a snake, ticket stubs, and gumball machine toys.

ephemorabilia by MPG503 May 26, 2009