I used to have this item in my game, lost it in some backup failure and I can't find it any more.

It's a bed which can be used by toddlers and children, but it's only 2 tiles long. The toddlers use the child animations when using it and sleep under the covers.

A few people on the random questions thread said they use this so I would be grateful for a name or a link to the item

Reasonably sure this one by Rebecah fits the description, but I think it's only for toddlers (it does match the original bed, though)
https://modthesims.info/d/312770/up...that-works.html

It's possible there are some others that are clones of this one, or have the same functions, too.

And these:
https://modthesims.info/d/253659/be...three-beds.html
https://modthesims.info/d/242467/si...ded-please.html

Plus a few more (double bed, etc.) in Rebecah's downloads:
https://modthesims.info/downloads/a...=829012&packs=0

Oh thank you!! The princess bed is exactly like the one I was looking for, the only thing is I'm sure the version I had previously was not a princess bed, I think it was modelled on the cheap pine bed. But the princess one should work too.

There are two types of toddler bed.
A. Toddler sleeps on top of the covers and wakes up once energy is full. Like a dog bed.
B. Toddler sleeps under the covers like a child. Can also make and jump on (jump on can be modded out) the bed.

The princess bed is an under the covers type. I think you may be after the Hansen toddler bed. I don't know where it came from as I can't find it online now at all, only the rest of the Hansen furniture. I was hoping it might be on Sims2Artists but I can't find it on there either.

See if this is it. You probably need the double bed as well. from Sims 2 Artists. https://sims2artists.com/index.php?topic=3174.0
Although I am not sure of that.
if it is slaved to to the double bed there are plenty of reoclours around
https://voleste.livejournal.com/41553.html

The pine bed was likely only up at Rebecah's site. Found it linked here, along with a set of recolors: https://modthesims.info/d/591453/cr...ck-colours.html (the links likely don't work any longer - but there's probably an archive with the files somewhere)

Rebecah had most of her creations at Affinitysims, and that site is down. Possibly also difficult to use with the Wayback machine.

Beck's stuff is archived at the Affinitysims archive here:
https://simfileshare.net/folder/48599/
In the Sims 2 folder there is a file called BecksSingleToddlerPineBed-MeshNoEP.zip which may be it.

That one that Simmer22 found, which Michelle linked, is the right one. And lovely recolours, too. Simsample's file was also the right one. I never would have found it. Thanks everyone!

It is the type B that you described, Jo

I have that one too. If it had come to it I could have dropped that one in as well. Do try the Hansen bed though, I am sure you will like it.