At a young age, I would say an instrument.
I have a few ideas. You could get him a wallet or a tee-shirt or a watch. If those aren't what your looking for then try going to amazon.com and browsing for gift ideas.
they would like clothes an i pod etc.
a bulliten board with their school on it
There are a huge range of different gift ideas for a boyfriend of five years on Christmas. For example, a nice book, trip, concert tickets, wine or spirit are just some ideas that could be given to a boyfriend of five years for Christmas.
The local electronics store is the first place to go when looking for gift ideas for a man. There is always a selection of gizmos and gadgets in various price ranges.
1935 - 1955
There is a wide range of gift ideas for six year old girls and it really depends on the tastes of the individual. There are tablets aimed at children such as the LeapFrog LeapPad or the Boogie Board, Harry Potter Toys or fairy costumes for example.
It depends if you are talking about girls or boys as their interests will be very different. Both girls and boys these days do enjoy video games and certain sports. So gifting them those could be useful. You should also check out some indoor game and toy gift ideas in the links in the sources and related links below for some great gift ideas.
Try gift cards if all else fails. Go for the electronics if you are looking for a big gift. Smaller gift ideas would be like cool sweatshirts.
I love the gift ideas for the 50th birthday on www.squidoo.com/50th-birthday-gift-ideas as it has some unique gifts. The special collection includes gifts from 50 years ago like newspapers, candy and even coin collections. Everything on this page is "50" years old.
As girls like chocolate so I would suggest you that you should gift customized chocolate to your sister. This is unique and yet affordable gift to give someone.
Zune gift ideas for teenage girls include digital downloads, case accessories, gift cards, headphones and accessories, and even facebook and twitter credits!