Your gateway to endless inspiration
Some of these are Drarry cliches, some of these are just things I love. And in no particular order. Enjoy, and add your own!
CW: one reference to sex
"Scared Potter?" or "Scared Malfoy" followed by, of course, "You wish." Bonus points if they're about to duel as adults, like in Auror training or something
Draco wearing eyeliner and/or leather pants
Ron being like "I really don't care that you're gay, but Malfoy??"
Pushing each other against a wall in a fight that turns into a kiss (yes, I know, classic Enemies to Lovers but I like it at Hogwarts specifically)
Harry teaching Draco to cast a Patronus and it turns out to be a stag
Party games, party games, party games, party games
Literally almost anything eighth year
When 'Potter' becomes 'Harry,' and 'Malfoy' becomes 'Draco.' But they still call each other Potter and Malfoy when they're teasing and during sex
Pansy and Hermione scheming to get them together
Auror partners!!
I love mutual pining, but especially Draco POV pining for years and years, especially when Harry grows up and just gets ripped and gorgeous and Draco practically drools at the sight of him
Oblivious!Harry realizing he's been wanting Draco forever
Harry apologizing for Sectumsempra
Kissing in the Great Hall to come out to everyone
Ron and Draco becoming friends!! Draco being the only one who can beat him at chess
Hermione and Draco bonding over books and nerdy stuff
Their friends having debates over who was more obsessed with the other--bonus points if it is hearing this debate that gets them together/helps them see that the other likes him back
Smelling each other in Amortentia!!
Draco in Weasley sweaters!!
Harry returning Draco's wand after the war
H/C after nightmares
Draco being the only one (other than Harry's friends ofc) willing to call him out/be real with him
Narcissa and Harry friendship!!
Lucius Malfoy bashing
Handshake, handshake, handshake, handshake--especially as adults and especially if Harry initiates it and Draco hesitates in surprise before finally taking it