For those that love the low-poly look, Humble Bundle has a Synty Studios bundle, with a bunch of great asset packs from their "Simple" and "Polygon" series. $25.00 gets you 14 different asset packs and a $10.00 coupon for the Synty Store (looking at you POLYGON Scifi space https://syntystore.com/collections/frontpage/products/polygon-sci-fi-space-pack)
Disclaimer: I'm not associated with either Hubmle Bundle or Synty Studios, but I have bought a bunch of bundles, and have a bunch of Synty asset packs.
https://www.humblebundle.com/software/best-of-polygon-game-dev