Okay, further LJ research has revealed that the following IDs are available:

• kutchkutch — this is what we call “being whiny” at our house
• cindersandashes — what the Thomas trains say when they want to swear, as in, “I’m out of water! Cinders and ashes!”
• bittermaker — this is my poker nickname
• canadiantire — surprisingly, not gone
• canadiantired — clever!
• mothersuperior
• happyhour
• backyardbliss — I like this one, but it is too close to another favourite blog of mine, Suburban Bliss
• neckofthewoods
• stompingground
• backforty
• birthdaycake
• chattycathy

Unfortunately, all of these are already gone:

• satisfied — name of my personal theme song
• motherload — thought of this clever one, but it is gone
• happymedium — I loved this one, but gone
• hodgepodge — what calls it when we’re having a mishmash of food for dinner
• happygolucky — another one I loved, but gone
• cantcomplain — surprisingly, gone
• tickledpink
• snowbelly — but I can have snow_belly
• devilmaycare
• lackidaisical — but I can have ‘s clever twist, laxidaisical
• takethecake and takesthecake

I’ll keep looking. In the meantime, vote on the possibilities!