Start with whatever fixes the problem you notice on every single trip. Accessories are best prioritized by frequency of use, not by how impressive they look bolted on. If something in your rig slides, rattles, or lives in the wrong spot every time you hit dirt, that's purchase one — the once-a-season conveniences can wait their turn.

Individually no, collectively yes. No single accessory changes how your rig drives, but overlanders are famous for hauling fifty small conveniences that add up to a passenger's worth of weight. The fix is a habit: after each trip, pull anything you didn't touch. Gear that keeps earning its spot stays; the rest lives in the garage until it's missed.

UV-stable materials and solid mounting, mostly. Sun kills more gear than impacts do — cheap plastics chalk and crack after a season behind glass or out in the bed. Dust works into anything that pivots or slides. Favor coated hardware, serviceable moving parts, and mounts that bolt or clamp rather than stick. The product page usually tells you what you're getting.

Almost always, yes. Most accessories are hand-tool installs measured in minutes rather than weekends, and that's a big part of their appeal. Each product page spells out what's involved, so read it before ordering instead of after the box arrives. If a listing mentions drilling or wiring, that's your cue to budget a proper afternoon.

Improvise where failure doesn't matter; buy purpose-built where it does. A bungee cord organizing a duffel is fine. A zip-tied phone mount on a washboard road is not. Purpose-built parts earn their price through fitment, vibration resistance, and not becoming projectiles — so judge each purchase by what happens the moment the homemade version lets go.