My son from 6 months old, has had the same lovey.
BUT, when he was still a baby, I got him 2 others, as a back-up in case we lost it.
I found his back-up loveys, on E- bay. And yes, this was MUCH later, like a year later... that I found it, on E-bay.
The original stuffed toy lovey, was from Gymboree.
So I did a search online, and found it. Brand new, on E-bay.
You could try that. Search E-bay.
But sure, my son has other stuffed animals too.... but his LOVEY, is only this particular stuffed cow... that he just adores. He is 5 now... but he still calls it his "best friend" and loves it dearly.
And still sleeps with it.
His lovey, once fell out of our car.... we realized it as we drove home... we went back to where we were parked, and FORTUNATELY, it was still there, in the parking lot, at the stall we were parked in. Talk about PANIC... until we found it again.
So, I REALLY understand how you feel....
Oh and by the way, when my son got older, he found the other 2 back-up loveys I had... of that same cow he has. He asks me "Mommy! I found 2 more cows!" So I explained that I got those for him when he was still a baby... just in case we lost his original one. So then, he ALSO put the other 2 back-up cow loveys, in his bed too. But he ONLY LOVES, his original stuffed cow lovey... that he has had since he was 6 months old. It is still.... surviving and through all the times I put it in the washer. He will even tell me "Mommy, cow needs to be washed.... "
So cute.