If mum and dad are coming up to a big wedding anniversary, or you just fancy making a fuss of them, a surprise party could be the perfect way to show them you care. Not only is a surprise loads of fun to plan, but you can take some of the stress of planning for a party off your parents' shoulders by keeping them in the dark until the last minute.

The first thing to do is to get your mum and dad's friends on board - Facebook could be a useful tool for making contact these days, or see if you can sneak their address book out of the house for a day or two.

For extra special gold and silver celebrations, invite your guests with our special silver foil party invitations and gold foil party invitations. They've got a luxury look and feel so your guests will know how special the event you're marking is.

It's important that your guests of honour know that it's a surprise party as soon as they arrive at the venue, so make sure there are plenty of decorations up to give them a clue. Opt for gold and silver balloons, table confetti and a big banner congratulating them on their special anniversary!

Choose tasty but easy food options to keep your own stress levels low, but throw in a few themed surprises; how about Gold Bars on the buffet for a golden anniversary, or cupcakes frosted with metallic icing in the relevant colour?

After decades have passed, there's a good chance your mum and dad might have lost touch with the original members of the bridal party - bridesmaids, groomsmen, flower girls and page boys. If so, why not really take their breath away by attempting to track down these special friends and inviting them to the celebration?

A surprise anniversary party is sure to earn you plenty of brownie points however you organise it, and your parents and guests are sure to love the opportunity to catch up - so what are you waiting for?