sif/bill
[Who holds what?]
The umbrella, when it rains - Bill can control storms, so being rained on when either don't want to get wet is hardly a problem and umbrellas are useless when he can just shoo the clouds away!
The popcorn at the cinema - They'd probably each get their own so they don't squabble over the amount of seasonings. I imagine since Korbin was a hot planet that Bill would have adaptations like a salt gland that would make him able to digest salty things without getting thirsty, a handy thing for a species who don't always have access to fresh clean water. I feel really sorry for the people sitting in front of Sif when she found out just how salt tolerant he is. She sprayed popcorn everywhere.
The baby, when it cries - Bill! He needs far, far less sleep, and I bet he can make low, rumbling vibrations (purrs basically, Sif teases him about it) that soothe most infants when held close to his chest.
The ice cream cone, when they share - Sif, if they must share there will be less fuss if she has control of the cone.
The remote, when they sit down to watch a movie - uh well not really sure how big on TV they'd be, but I feel if the tv is not too ancient Bill could possibly control it wirelessly. I like the idea of him being slightly more cyborg-y than he is in canon, so can have some basic control over tech. Now when it comes to who has the say over what they watch, that's a whole other story. He could possibly watch a different channel in his head if he and Sif want to watch different programs to avoid a fight?
The basket, when they go shopping - Bill, simply because he's stronger and doesn't mind being the pack mule.
The door, on dates - Bill. Sometimes it annoys Sif if he's in his bulky cyborg form, but he never makes a huge show about it like some dudes do. She knows he does it because he respects her deeply, not because of her gender (he will also open doors for Thor in the exact same manner, and it's hilarious seeing Thor squeeze through a tiny Midgardian doorframe with the big ol' Bill in the way).
The other’s hand, most often - Uhhh, hmmm, Sif might initiate it more? Bill seems to get in very down moods and is the kind of person who isolates himself when that happens. He'd love and crave physical affection (headcanon: the beast he is mixed with is very social and physically affectionate so he does get slightly embarrassing allogrooming urges towards people he loves that conflict with him wanting to be alone) but the past treatment from his people makes him hesitant to initiate intimate touches .
The camera, when they take pictures together - I'm going to cheat and pull out the cyborg card again. Bill can take mental snapshots of Sif. If they are near enough to Skuttlebutt she will take pics of them together too because that ship is the true shutterbug in the relationship, she has a file of sif/bill pics and some of the images are rather embarrassing.
