I use an audio interface with bookshelf speakers... mostly overkill for people who don't make music because they have xlr and line level inputs for using a professional mic.
Do you have room in your computer setup for two bookshelf speakers at ear height? Because otherwise, I'd recommend a sound bar type of deal.
Smosh humor.
Everything search app is easily my most used on my Windows PC. Instant, as-you-type file search by name with detail sorting and wildcard support. I set a keyboard shortcut as well. It puts Explorer search to shame. As good as Spotlight, which I was missing from when I had a Mac in 2008.
LaunchyQT - modern fork of Launchy that actually gets development. App launcher, dead simple.
FanControl - Fan curve software with all the features I want including hybrid temp sources, sensible automatic settings, visual graphs with an intuitive interface.
AutoHotKey - Hotkey scripting language that I can use even as someone who barely codes.
Transcribe! - Not open-source but it's a reasonably priced audio and video slow down app for transcribing.
If they're that indie, consider paying for it because they need support to exist. Sorry I don't have a real answer.
Klipsch has been a consistently good brand for a long time. I checked on ebay and there's some great ones for $200 to $300. Only 2.0 setups for that price, though.
You will need an amp for those unless it's got a built-in amp (some models have that).