Short answer: bring one compact GaN wall charger (65–100W, multi‑port if you have a laptop), one pocket 20–30W USB‑C charger for phones, and a power bank under 100 Wh (carry‑on only). Add a small international plug adapter or a wall charger with interchangeable plugs. Below are clear picks, why they matter, and travel tips.

Top picks by use case

• Pocket phone charger (ultra‑compact): Anker Nano 3 / Anker 511 Nano — tiny GaN single‑port USB‑C, ~30W, foldable prongs. Perfect for a phone or small tablet when you don’t want bulk. (androidauthority.com)

• All‑purpose travel wall charger (best balance): a 65–100W multi‑port GaN charger (examples: UGREEN Nexode 65W, Alogic Rapid Power 67W). Compact, charges a laptop + phone at once, and many include travel plugs or a travel case. Aim for PD 3.0/3.1 and at least two USB‑C ports. (shopsavvy.com)

• Power‑user / multi‑device charger (if you need maximum power): Anker 737 / Anker 735 / Razer 130W / Satechi 145W — higher total wattage and multiple ports for charging big laptops (16" MacBook Pro class) plus phones. Good for longer trips or multiple people/devices. (They’re bigger but still much smaller than old bricks thanks to GaN.) (anker.com)

• Power banks (portable battery): choose one under 100 Wh so it’s airline‑friendly. High‑capacity travel favorites include Anker PowerCore/“737” 24,000 mAh (laptop‑level output but still typically under the 100 Wh airline limit) or a smaller 5–10k mAh MagSafe / 20–30W pack for light use. Always check the Wh rating printed on the pack. (anker.com)

Why GaN and wattage choices matter

• GaN (gallium nitride) chargers deliver the same or higher power in a much smaller, cooler package than older silicon bricks — ideal for travel. For phones, 20–30W is plenty; for tablets and small laptops 45–65W is usually enough; for bigger laptops or fast dual‑device charging choose 100W+. (androidauthority.com)

Important airline and safety rules (must‑know)

• Power banks and spare lithium batteries must be carried in carry‑on baggage; most consumer power banks ≤100 Wh are allowed without airline approval. Batteries 101–160 Wh usually require airline approval; >160 Wh are forbidden. Check the Wh marking (or compute Wh = V × Ah). (faa.gov)
• Some airlines (and several countries) have tightened rules around in‑flight charging and where power banks are stowed — a few carriers require power banks to be visible/in use (not stuffed in checked or hidden overhead bags). Always check your airline’s current rules before flying. (washingtonpost.com)
• Use quality brands, original or USB‑IF‑certified cables, and avoid swollen or damaged batteries. Keep battery terminals protected if you carry spare loose batteries. (cnn.com)

Practical packing checklist (what to bring)

• 1 compact multi‑port GaN charger (65–100W) with foldable prongs or interchangeable plugs. (techadvisor.com)
• 1 pocket 30W GaN charger for quick phone top‑ups. (androidauthority.com)
• 1 power bank <100 Wh (carry‑on only). Check the printed Wh or mAh→Wh conversion. (faa.gov)
• Short USB‑C to C cable, USB‑C to Lightning (if needed), and a compact international adapter or a charger that includes plugs. (techadvisor.com)

Quick buying tips

• If you only want one charger: get a 65–100W GaN multi‑port unit (it’ll handle a laptop and a phone). (shopsavvy.com)
• If you fly frequently, prioritize chargers with foldable prongs and a good travel case. (techadvisor.com)
• For peace of mind, choose brands with good reviews and safety features (temperature control, overcurrent/short‑circuit protection). (anker.com)

If you want, I can:

• Suggest 2–3 exact models under a price target (e.g., under $50 or under $120), or
• Build a compact travel kit (charger + power bank + cables) for your device list (phone, laptop model, headphones).