This may not be a terribly exciting post (although some people probably quite like this sort of thing – it takes all sorts).
I have a number of what could be called projects on the go, or at least have in the past, and each time I’ve started a new activity I have tended to get a domain to reflect the subject. Therefore I own byke5.co.uk (default account) kevwalks.co.uk (about my walking) and recently, kevroml.co.uk (Kev Rest of my Life) to detail my wind-down to the world of retirement. There’s also Kevswims.co.uk (never really took off) for when I dipped my toe into the world of swimming.
To try and tidy up, I’ve acquired yet another domain (Kevbaldry.co.uk) to bring everything under one umbrella.
As most of the (active) domains host a blog (as well as some bits and pieces on Blogger) I wanted to have, in effect, one platform with a few blogs attached but all with a consistent feel.
WordPress does not allow for multiple blog on a site but I discovered a bit of a workaround / fudge.
Any post (or static page, I suppose) can be categorised. By applying a category to a post, similar items can be grouped together like when you select a category from a list and only those items with that category are displayed.

So basically, all my walking blog entries have been tagged with kevwalks and the retirement stuff rest of my life. I then added menu items to display an archive of each category – in effect a number of separate blogs on one page.
Occasionally, it could be possible when reading one ‘blog’ to stay into one of the others but a quick click on the main menu will bring you back to the correct category/blog.
Going forward, instead of assigning categories to my posts (apart from kevwalks or kevroml) I need to use tags instead.