My packing secret weapon: Bagail 8-set Packing Cubes , $17 (originally $25) Go through TSA like a pro: Tigari Travel Wallet Passport Holder , $25 The carry-on’s perfect plus one: Lovevook Lightweight Puffer Tote Bag , $26 (originally $30) The sneaker that goes with everything: Project Cloud Platform Sneakers , $50 (originally $70) Comfort that actually looks cute: Prettygarden Wide-leg Palazzo Lounge Pants , $25 (originally $37) When it comes to travel essentials , Amazon is my first stop every time, and I've shopped enough products to know exactly what's worth it. Whether I'm packing for a quick domestic weekend or a longer international trip , the same carry-on staples make the cut every single time.  From packing cubes that keep my suitcase from descending into chaos to a crossbody bag I grab the second I land, every item on this list has proven itself trip after trip.…