Knives
If you need knives that won’t do much, then feel free to buy some from the dollar store. They’ll be fine for the occasional camping trip, but save yourself some frustration and buy a few good knives to have.
Earbuds, Headphones
While we understand the appeal of those cheap headphones that only cost a dollar or two. But, you should know that they usually have terrible sound. Just buy a good pair that cost $10 to $20 at a major retailer. These will last you so much longer than the cheap ones.