I think the "worst" thing I ever got was a VR headset. It wasn't a bad present per say and I really liked it at the time but unfortunately the VR space died pretty fast and it was completely useless soon after I got it.
Edit: it was a headset where you put your phone inside, I should have said that first
Edit: it was a headset where you put your phone inside
Aw man those things were so cool! My dad actually got one of those for me as a gift when I was way younger, I forget for which occasion. Didn't use it much tho cause later my grandma found out about it and stole it, throwing it away in the garbage. She doesn't hate me or anything, she was just scared I'd get brain cancer and since nobody in the family ever believes her because of that crap she reads on facebook, that was her way of protecting me. Oh well.
Still had cool experiences. I think now a days you can use apps to turn your phone into a makeshift oculus quest and stream to your PC using Steam VR, so somewhat useful I think