Dune had shields that worked somewhat similarly. Specifically, anything moving above a certain relatively slow speed would get deflected. So you were immune to bullets and most other projectiles, but still vulnerable to slow moving darts or relatively slow blades or grapple attacks.
I can’t recall how it played out in the books (read them a couple of decades ago in high school), but in the movie, a lot of fights ended up being grapples with both parties trying to work a blade in on each other. They don’t address the potential uses of shields as industrial protection equipment; I get the impression they were rather expensive and only the most important people could afford them.
The transporters, as used on Star Trek, Stargate, and similar shows, have some very obvious uses as quick and effective means to move things large distances very quickly, even if they are limited in circumstances where they can be used (the Star Trek transporters are vulnerable to EM interference, and one style of Stargate transporters requires a clear line of sight or a matched set of transporters, with the other style also being vulnerable to interference). Besides being able to get your main characters in and out of scenes without needing a shuttle, such technology would be hugely useful for transporting and transferring cargo and such.
Another fun one, from Old Man’s War, is SmartBlood™, a nanobot replacement for human blood which carries out all of the normal duties of blood (and doing so rather better), as well as having multiple other handy uses (though it needs to be paired with a BrainPal™ neural computer to be useful for anything). One character figures out that you can trigger your SmartBlood™ to self-ignite, which when combined with biting your own tongue, means you can now spit fire at anyone within a foot or two of you.
Aside from the fun potential of being able to spit napalm at people you dislike, SmartBlood™ lets you go up to twenty minutes without needing to draw breath, and can clot instantly when needed, which comes in handy for the super soldiers it was designed for. The BrainPal™ meanwhile has wireless networking capability, allowing users to have private conversations from anywhere as long as they have a network connection between them, as well as being able to control compatible equipment.
Main downside presented for the BrainPal™ in the books was that it was possible to jam the wireless signals, which could be bad if you planned to use some piece of wirelessly controlled equipment in the next few moments or needed to communicate with someone outside of shouting distance.