Have you noticed that on 4s-s it's always the digitizer/display that breaks and on 5/5s-s it's always the

buttons.. so that no matter what model you have you always have to disassemble that thing completely?!
Or is it just me again?
Anywhoo
well if they wouldn't even notice a weld, maybe the "welded gift" is pointless

.

make some cupcakes, write their names with frosting and call it a day.
(I hope they're at least smart enough to eat

)
Wait wine rack?
How about a single bottle stand?
one of those "defying gravity" bottle holders you could also buy..
but personalized
View attachment 54300
buy one to take some measurements if you're unsure how it works..
you could write their names (last names makes sense IIAM) to the side wall to show your welding skills if you want to;
stamp your name to the back plate and you still keep the "slightly useful" part of the approach.
*shrugs*
cutting the holder from 1x2 1/2 rect tubing will lessen the effort
'sid