Number one: Having a good quality sport percussive massager has made a huge difference for me. I can use it to help stimulate weak muscles, to help my balance, or to work out morning stiffness. Using it every few days has actually helped with my mobility a little bit. It's also nice, because it's something you might actually be able to help her with yourself. I have good results with this one: https://www.amazon.com/Thumper-E501NA-Sport-Percussive-Massager/dp/B009GEQNJS/ref=sr_1_2_sspa?ie=UTF8&qid=1521764036&sr=8-2-spons&keywords=thumper+sport&psc=1&smid=ATMMZ66HXOJEM

Personally, I love having my phone in the shower or bath. This may be crazy, but for years now, I've been safely bringing my phone to the tub in a sturdy ziploc bag. I specifically use the good quality ones, and I've never once had a leak. I've also attached sticky hooks to the wall at strategic points, so I can hang my baggie'd phone on the wall where I can see it (hanging by a hole on the not-sealed part of the bag, of course). Not for everyone, but I've gotten loads of use from this. If you're determined to do the grown-up thing, and get something actually designed for that purpose, you might have good luck finding a waterproof phone pouch, designed for taking swimming. Many of them can also be hung on the wall, and can have good touchpad access.

I also get a lot of good use out of my laptop/bed desk. I've also had people recommend trying those mirrored glasses, that let you see your laptop screen without scrunching your neck down, though I haven't actually used them myself. Like these: https://www.amazon.ca/Prism-Glasses-Eye-Bed-Spectacles/dp/B000RZNBF4 I've used VR a bit, and I don't think it's great for movies. It might also be less than ideal for gaming, since you're supposed to move around.

Lastly, this one's not exactly a romantic present, but having an electric can opener has also been really great for me. I didn't realize how much I needed it until I had it. I still get my guy to open the jars though. :p

Whatever you get, I hope you guys have fun. :)