I am going to share a few of my favorite cheap but quality prepper items, and hope folks can add some too. :)
Stonebriar tea light candles the 300 pack for $21! I own 400 already, just ordered 1200 more. I've used these a few weeks now, and they truly burn clean for 7 hours! I don't like the glow as much as a good soy or beeswax glow that's more golden, but no one else noticed but me.
https://www.amazon.com/gp/product/B08KRC4VFH?pf_rd_r=SBPN4XAWYN86QCSE381H&pf_rd_p=9d9090dd-8b99-4ac3-b4a9-90a1db2ef53b&pd_rd_r=6df00927-3d9f-4f7b-87a5-a75733d35935&pd_rd_w=lavPd&pd_rd_wg=91G96&ref_=pd_gw_unk Nimbus toothbrushes. Truly the best soft toothbrush. We ordered 10 compact packs, don't like the biggest size, and 10 kids packs. We used a discount code found on a youtubers video about them, it's an old video but had not expired. AskAHygenist was the channel, and the code was nimbus4u. With code that turned out around $2 a brush, not terrible.
Sounds silly, but the tangle teezer hairbrush. This won't break fast like other brushes, really does a fine job (I have waist long hair) and it's easy cleaning because no balls at the end of the bristles, wet or dry. Easy to clean stuff is gonna be shtf best friend.
Flour sack dish towels from target or Walmart. Thin but sturdy so wash quick and dry quick so good even in winter or grid down. For diapers, hair towel, spills, in a pinch gauze.
Water filters and water straws from shtfandgo.com they got replacements for berkey and the brands that use the same filter for half the price. Wisconsin, small business. Terracotta pots. You can make heaters, little fridges, cooking stoves, and it's intended use.