Computers are about the only ones worth bringing, really.

Laptops are usually okay. Desktops are either switchable or just change out the internal power supply -- cost you about $30 and it's a 10-minute job.

Monitors only really worthwhile if modern, flat screen -- many are dual voltage.

Printers can be a pain -- stoopid HP region-code their print cartridges but you can phone and reset it. Probably not worthwhile if it's more than a year or 2 old since they're disposable items these days.