I modified this lamp design to fit this lampshade " https://www.thingiverse.com/thing:2183971 ", in addition to giving it the shape of a bottle.

The base is stable and can be used with an E27 socket. You can use a little glue to attach the socket.

Here is the original lamp " https://www.thingiverse.com/thing:4300206 ".

Kingroon

Kingroon KP3S

No

Yes

0.2

45

PETG

The filling could be smaller, however I think it might lose stability.