Yes! Many. I just have to think of them. Hm. We use some odd family phrases too, like just in the time of nick.

We have many words than are pretty much the same as thingamajig - my dad calls everything piglet, we use wooblie quite often (though that might be fairly common around here). Uh. It's hard to think of them cos I'm so used to them so they don't seem odd.

Floofed/floofled/floomped means tired/collapse-y.

My mum has a ornamental dog thing that has a pot as part of it, I guess supposed to be used as a plant pot or something but mumsie has loads of pens and things in. Whenever we have something important that we don't want to get lost it gets tucked under this thing and we say we're putting it under the dog. Not quite the same as nonsense words but can be rather confusing if you don't know what it means but surely the dog moves! Wait, you don't have a dog! etc.

I'm sure there are more, I'll add them as I think of them I like this a lot <3