Most girls like handbags, don't they? If you are changing your handbag almost everyday to match your outfit, you may wish to consider the following option: Bag in bag.

What's a bag-in-bag? Basically it is like a big cosmetic bag which you can put everything in. If you like to change your handbag, take out your bag-in-bag and then put it into the new handbag. In that case, you can be sure that you have everything you need (provided that you have put all those in your bag-in-bag). These kind of bag-in-bags are very popular in Asia, particularly Japan and Hong Kong. You can get a nice bag-in-bag at a price as low as 2 -3 pounds.

So what do you need in your bag-in-bag?

1) Your purse (with some cash and your identity documents in it)
2) Octopus Card (I live in Hong Kong where public transport is used almost all the time. An Octopus card contains a built-in microchip with your payment information. With a simple 'touch' of your Octopus at a processing machine, the payment system automatically deducts the correct amount. There is no longer any need to carry coins. Octopus is now widely accepted by major transport operators, retail shops, parking facilities, self-service kiosks, leisure facilities and schools. In short, you can afford not to bring any cash out but you definitely need your Octopus Card. You can travel, shop and eat with it.
3) Keys (It is self-explanatory, right?)
4) Your Phone!

The list can go on and on..... but if you find yourself carrying a heavy handbag around all the time, it may be a good time for you to take a look into your bag and take out any unnecessary things!