Hello :-)
> brands
All brands have good and simple eyepieces.
There are a bunch of no-name/clones that give you the best bang for the buck. E.g. the 58° (HR Planetary clones) and 66/68° type (gold/red-line).
Overview
Some no-name 32mm Plössl are on sale on Amazon for under $9 at the moment, pretty much a no-brainer for a larger overview. At F/4 the exit pupil gets a bit too large to be useful though, which will especially be noticeable under some light pollution. A ~25mm might be more versatile.
(25mm)
(32mm)
(No need to get both. 32mm will create an 8mm exit-pupil- 1, 2)
Planets
The 3.2mm HR Planertary perhaps. I struggle suggesting overly high magnification as the telescope isn't perfect (1, 2), but these eyepieces are also often on sale.
Right now only the 5mm is on sale ($28) unless you order from a Seller based in China (<$30, possible cheaper via Aliexpress!).
(Sometimes the 58° type sells for $20 or less, but you can't really count on deals popping up.)
Avoid short Plössl due to poor eye-relief. Sets (overpriced, mediocre, redundant). The bad cheap 4mm 62°.
> 17 and 10mm
You could also add/replace these with the inexpensive, long eye-relief 66° or 68° type ($29 via Amazon, often on sale <=$20 especially via Aliexpress). But they are only available in 6/9/15/20mm, not under 6mm. 20mm would be kind of redundant with the overview eyepiece, but depends on what focal lengths you want.
> accessories
"Turn left at Orion"- the missing manual on how to observe, what to expect and what's worthwhile observing in small to medium telescopes :-) Especially useful in combination with telescope and binoculars (even cheaper ones like the <$40 Celestron Cometron).
Clear skies!