The only thing with trailers is they can sometimes be inconvenient/impossible to get through gates on cycle paths for instance.how about a small trailer attached to the seat post, something like this one
Children Bike Trailer | eBay
@anniegirl......I think with certain styles of bikes wicker looks really nice....its becoming quite fashionable you know
Try having a look on american ebay as they have lots more innovative pet accessories there than here.
I got my folding pen for when I am camping from an american company and also a double dog pushchair
I have definitely seen many more different dog carriers and will try to find some more examples for you, 5kgs is not far from the safe limit to carry on a front basket, you can take bigger dogs if you use your rear rack.
I modified a dog travel box for use by some of mine on my rear rack a few years ago, but to be honest they arent fussed now, they prefer to sleep in the van and await my return ......lazy bugs......
Lynda