Epic-length, but Not Necessarily Epic-quality
Harry agrees to do Bill and Fleur a big favor when he arrives at the Burrow after Fifth Year. They, in turn, join forces with Hermione to make certain that his "Molly Summer" is far more enjoyable and productive than it might have otherwise been. An HBP alternative that diverges from canon at the start of "An Excess of Phlegm."
Ships: Harry/Hermione Bill/Fleur
Harry is struck down by a nasty curse just after he becomes The Boy-Who-Won. It's a curse that requires some non-traditional treatment, tenderly administered by a trio of young witches willing to share in more than just his physical therapy. A fluffy smutty travelogue story set in South India.
Ship: Harry/Hermione/Patil Twins
Completed Stories, less than 100k length
Harry and Hermione are forced to have sex in order to save Ron's life. Somehow they muddle through the ordeal, and create "The Co-Ed Naked Dueling Club (TM)" along the way. A very raunchy and very long bit of cracky fluff that earns its "Adult-Only" rating.
Hermione Granger decides to test the effectiveness of the defenses on Privet Drive by attempting an overnight visit. Then Luna tries to visit Harry, then Katie, then Fleur, then Lisa...Post-OotP.
Ship: H/Hr (sort of...shades of H/Hr/many, with lots of Carpe Diem guilt-free fun)
The One Shots
After a rough Remedial Potions lesson, Hermione decides that what she really needs most is a place where Harry and she can relax and act like a couple of normal teenagers. The Room of Requirement exceeds their expectations.
Harry and Hermione get more than they initially bargained for when they employ flirtation as grief therapy in the Summer after Sixth Year.
Harry needs to do some soaking to figure out the Second Task's clue, but the Map always shows it busy, with couples forming overlapping dots. Dobby helps out, and Harry and Hermione end up doing some overlapping of their own.
Hermione is allowed to dress the Golden Trio in coordinated Star Wars-themed outfits for a Post-Voldemort Halloween costume ball. So of course she's Leia...but which one of her boys gets the blaster instead of a light saber, and is he smart enough to figure out why?
Ships: Han/Leia, Luke/Buffet
Harry's true feelings for Hermione are revealed when he tries to replace the pair of knickers that he accidentally-on purpose vanished. Hermione then returns the favor. Fluffy one shot with a disturbing reference to Petunia Dursley's laundry.
The samurai wrote poems as part of their training. Harry, Ron and Hermione train with a samurai. While Ron works on his bawdy limericks, Harry takes a risk by penning something a bit more angsty,