A drawer full of add-ons will not make a handheld more useful. The best handheld accessories solve a real problem such as protection, charging or TV play, and they should match the way you already game.
Quick Answer
Start with a fitted case and screen protector. Add a charger only when the supplied one does not suit your travel routine, and choose one that supports the handheld's required USB Power Delivery profile. A dock earns its place when you will connect to a TV or monitor each week. A microSD card, power bank, controller and compact keyboard solve narrower needs. Buy accessories after you can describe the problem each one fixes.
Protect the screen before the first trip
A handheld puts its screen, controls and computer into one object. A scratch or cracked panel can take the whole system out of use. Apply a protector made for the exact model, because camera holes, curved edges and display dimensions differ.
Choose a hard or semi-rigid carry case that holds the device without pressing its sticks. The case should leave room for ventilation only after the handheld is switched off or asleep and cool. Do not zip a hot machine beside a loose charger plug that can knock the screen.
A case reduces everyday knocks. It cannot guarantee survival after a fall. Use the zip, keep drinks in another compartment and teach children to carry the case by its handle.
Get charging right
Read the original charger's wattage and USB Power Delivery requirements. A charger advertising a large total output may split that power across several ports. Check what one USB-C port delivers while your other devices are connected.
Use a cable rated for the intended wattage. Length matters on a sofa or airport seat, while a thick two-metre cable can be annoying in a small bag. One short travel cable and one longer home cable cover more situations than a bundle of unknown leads.
A power bank helps when your commute or flight has no reliable socket. Match its USB-C output to the handheld and check airline limits before travel. Capacity on the label is not the amount the handheld receives after voltage conversion and heat losses, so expect less than the headline figure.
Buy a dock for a real second screen
A dock is useful when the handheld also serves as a lounge or desk machine. It can combine display output, charging, Ethernet and USB accessories through one cable. That makes sense for weekly TV play, a student desk or a small shared workstation.
Occasional holiday use may need only a compatible USB-C to HDMI adapter and the original charger. The adapter must support the handheld's video mode, and the USB-C port must carry DisplayPort output. Check both sides before buying.
A dock does not add graphics performance. The handheld still renders the game. A 4K-capable HDMI port describes the signal the dock can carry, not the frame rate your game will produce at 4K. Set a sensible output resolution and keep the device's vents open.
Storage depends on your library
MicroSD expansion suits smaller games, media and a library you want to move between compatible devices. Large PC releases can load better from the internal NVMe SSD. Card speed labels can be confusing, so check the handheld maker's supported standard and buy from a traceable source.
Before adding storage, list the games you keep installed. A player rotating through two large titles may manage the internal drive. A household sharing dozens of games will feel the limit sooner.
Opening a handheld for an SSD swap adds risk. Model-specific drive sizes, shields, battery connectors and recovery steps matter. If you are uncomfortable with those details, larger factory storage or removable expansion is worth considering.
Controls and desk extras
A separate controller helps when the handheld is docked across the room. Check Windows or SteamOS support, connection method and whether the games show the correct button prompts. For local multiplayer, count players before buying pads.
A small wireless keyboard with a touchpad can rescue launcher logins and Windows prompts from the sofa. It does not need gaming switches. It needs reliable connection, readable keys and a safe place to store it.
Earphones matter on public transport, and a headset helps with chat. The choice depends on the handheld's audio jack, USB-C ports and Bluetooth behaviour in the games you play. Wireless delay bothers rhythm and competitive players more than someone watching a film.
Build the list around your device
These accessories are model-specific. The 7-inch ROG Ally Z2A and 8.8-inch Legion Go S have different bodies, port positions and screens, so a case or protector for one is not a safe fit for the other. Browse current handheld models and popular PC gear, then match every accessory to the complete model number.
Your first order should solve protection and charging. Play for a week before buying the rest. You will learn whether storage, TV output or grip comfort is the next real limit.
FAQ
Which accessory should you buy first?
A fitted screen protector and a case cover the risk every portable owner shares.
Is a faster charger always better?
No. The handheld accepts power according to its supported profile. Extra charger capacity can be useful for several devices, but it does not force the handheld to charge faster.
Is a dock useful for rare TV play?
A compatible video adapter may cover rare use. A full dock earns its cost through frequent charging, Ethernet and USB connections.
Compare handheld models first, then choose accessories that match the exact ports, size and way you play.