To avoid a surprise blowing up in your face, here are some key tips – and remember that nobody ever wants a vacuum

Clockwise from left: a Dyson Supersonic hair dryer, a Fitbit Versa smartwatch, a Sage coffee machine, an Amazon Echo Studio and a Kindle Scribe
Buying a tech-themed Christmas present for a loved one is normal if the recipient asks for it. But as a ‘pleasant surprise’, it’s fraught with risk. Here are five Dos and Don’ts about buying tech for friends and family this Christmas, if you’re coming up with the idea yourself.
Do: Dyson hair gadget (from €349) Don’t: Dyson vacuum (from €280)