Is this a weird Valentine’s gift?

So this might be a dumb question but this is my first Valentine’s Day with my girlfriend and I’m kinda stuck.

I’ve liked her for a long time and we only recently started dating, so it kinda matters. But also I’m on a really tight budget though, like $50 max. I already got her flowers and chocolates, but I wanted to add something more… useful. Like something she’d be using every day.

I’m confused between two things: a power bank (iniu P73) or something like a small necklace off Kendra scott. The jewelry stuff feels more Valentine’s-y, but I’m worried it might feel like I just grabbed kinda the obvious thing.? I don’t know.

The reason I’m leaning toward the power bank is because she literally never charges her phone at night. She scrolls till she falls asleep and then wakes up with like 8% battery and complains about it all day at school. So it felt like something that actually makes sense. But I’m also worried a power bank might be a weird Valentine’s gift and come off wrong. But then it does come in a bunch of cute colors and sizes though and she loves owning such stuff.

So honestly just asking is a power bank a bad idea for Valentine’s? Or should I play it safe with something more typical? Any advice would help.