Knives
We’re not gonna stop you from buying knives at the dollar store but we will tell you that they won’t help you cut anything. Instead of getting frustrated over nonfunctional knives, you may as well spend that extra dollar on knives that actually work.
Earbuds, Headphones
You may be inclined to buy headphones at the dollar store since you end up losing them anyway. However, they don’t have a good sound system and will end up breaking. It’s better to spend an extra $10-$20 on brand ones that will last you.