9 compact portable coffee makers for a reliable caffeine hit wherever you go

For caffeine addicts, a dedicated coffee machine is a worthy investment.

But that's very much an at-home setup — what about when you're out and about? Sometimes, a great local coffee shop will satisfy your cravings, but that's no given.

If you're serious about your caffeine hit, best to arm yourself with a sturdy, portable coffee maker that leaves nothing to chance.

There are a handful of brands that dominate in this market.

One is AeroPress, which shot to popularity with its innovative design that aims to combine the best bits of French press, pour-over, and espresso brewing.

The original model's compact, plastic build makes it pretty travel-friendly, but now there's also a smaller 'Go' version with an integrated travel cup and filter-paper holder.

Wacaco makes a range of sturdy, hand-powered brewers that deliver an espresso with a rich crema.

You release a front button and then press it in to extract the coffee — your squeezes turn into 18 bars (261 PSI) of stable pressure inside the capsule.

Don't have the means to boil water up separately? The OutIn does the heating part for you.

It's USB-C rechargeable and works with capsules or ground coffee.

This one's also great if the manual part poses a problem for you: it starts brewing at the press of a button, with no pushing or squeezing required.

One final system it's worth drawing attention to is the Rok Presso.

This looks a little bit like a two-armed corkscrew, although it's rather bigger in real life.

You add ground coffee, press down on the arms, and rather than pulling up a cork, the mechanism below produces a shot of espresso.