Ideas

FLOWERING: Quirk holder sprouts flowers when touching or being touched by other people.

Possible details of this quirk:

Flower Type: The flower that sprouts is determined by the other person's favorite species (e.g. daisies, hyacinth, etc); the flower reflects the other persons personality or emotions; the flower reflects the quirk holder's emotions or thoughts; The flower is completely random; the quirk holder has complete control over the type of flower; the quirk holder is limited to real flowers, flowers s/he's familiar with or can create new flowers never seen before - either hybrids or completely made up flowers

Mechanics & Considerations: Quirk holder uses up energy and so has to make sure s/he eats enough if using the quirk a great deal; Quirk holder produces higher quality plants when in good health or is properly "fertilized" (e.g. ingesting an appropriate ratio of nitrogen, phosphorus, and potassium which are the primary nutrients in typical store-bought fertilizer); It might hurt to pick the flowers; if left unpicked, the flowers might continue to grow; connection to Hanahaki Disease?; if s/he has control over what types of flowers to sprout, what restrictions are there? For instance, does s/he have to have first-hand knowledge of that species or could s/he have just read about it or seen a picture? How much knowledge? Can s/he make up a flower that doesn't exist in real life? How many can s/he sprout? A lot? Only a few? One species at a time or is s/he a walking bouquet? Do the flowers grow at typical growth rates or do they pop up right away? Does s/he need to drink extra water, take extra showers or make sure to get enough but not too much sun? Since fruit is the next growth stage of some flowers, can s/he create fruit and veggies? (e.g. an apple from an apple blossom). Would it be nutritionally an apple? On a darker/creepy/gross note: maybe the sprouts revert to human flesh when picked. Is the quirk holder more plant than animal? E.g. s/he does not eat normal people food but instead requires what plants require (e.g. nutrients found in soil, sun and water); is the quirk holder susceptible to plant illnesses and infections? Does s/he attract insects? Could s/he have xylem and phloem instead of blood? IS S/HE GREEN?? If s/he grows a toxic plant, can it make him/her sick? 

Believing is Seeing: (or something) Quirk holder can, within his/her line of sight, create any object, animate or inanimate, that s/he can imagine. 

(I have so many thoughts on this one, but I need more coffee so I'll be back to update later. Here are some others I'll eventually write up)

Memory Dump:

Save Point:

Dream Weaver:

Animalistic:

Willpower:

???: ground penetrating radar! 

Geomancy: 

???: Can acquire any other person's voice but only one at a time

Allergen:

Sudsy: generates soap from his/her skin oooo sparkly clean!

Differentiate: (or something) ability to separate substances on a molecular level - the stain removing potential is amaaaazing!