The most interesting destinations aren't always the safest, and no matter where you travel, it's always a good idea to keep some spare cash & your papers somewhere safe. Traditionally that means stuffing everything into a money belt under your clothes, but quite aside from being ugly, there are a number of issues with the usual beige money belt.
It can be really uncomfortable to have something jammed into the front of your trousers, especially if you've put your passport, credit cards, and a wad of notes in there. The elastic strap on mine has a tendency to slip up around my waist, or work itself loose. And if everyone is wearing one, it's not even that secure - pickpockets know they can get all your valuables from one easy place.
These days, there are a few far more wearable alternatives on the market. Here are three that I own and use regularly, on their own or in combination.
Clothes with Secret Pockets
Good for: cash, credit cards, SD card.
Clever Travel Companion makes underwear with a difference - I've got the black tank top with a secret pocket. This is the modern equivalent of sticking a couple of twenties in your bra for safekeeping, but much more comfortable. The company also makes other styles of t-shirt, and even knickers-with-pockets if you're feeling brave! I'm quite tempted to buy a second one, because one major down-side to clothing is it needs washing frequently.
A System for Maximum Versatility
Good for: passport, cash, credit cards.
PortaPocket produces a range of extra "pockets" made out of neoprene, with a system of interchangeable velcro straps. I've got a belt-length strap, and a shorter one that fits around a wrist or ankle, along with three different sizes of pocket.
The main advantage of this system is that it doesn't depend on any particular clothing, and you can change your set-up depending on circumstances. If I'm wearing boots, or jeans with a slight flare, then strapping my passport to my ankle works well, but when I'm in a summer dress or floaty skirt, then I fasten it above the knee. The smallest pocket is just the right size for credit cards and cash, and is tiny enough to hide away almost anywhere. I wouldn't use these pockets to store anything small that might fall out, because they don't fasten completely - but they're great for documents.
A Different Type of Belt
Good for: cash, photocopies, SD card.
The Eagle Creek All Terrain Money Belt is an actual, functional belt, so technically I suppose it's still a "money belt" after all. The simple black design is practical rather than stylish, but it's the zipped pocket on the inside that makes it so useful.
You can't fit anything big into a pocket that's constrained by the width of a belt, but by a bit of judicious folding I've managed to fit in not only a few euros or dollars, but also photocopies of my passport info page & visas. An SD card full of back-ups also fits in fine. I guess the Eagle Creek clasp would be recognisable to a well-practised thief, but as I usually wear longer shirts anyway, mine isn't on display - so it feels like a very secure way of hiding some cash.