> I’m impressed at how many people coalesce to the same suggestions to save space: simple clothes, layers, etc.
Buying toiletries locally can mean paying 2-3x the price in your home country. You actually save money by bringing more. For example, in the US the last time I checked I could buy a pack of floss for $0.99. In LATAM it's at least $3. The solution is to bring ~20 packs of floss.