Adding articulation.

I think your on to something with the lamp/ kitchen wares idea. Thanks! 👍😁

Trouble is I need large joints. Like for a two foot tall doll.

Yeah, look into BIONICLE LEGO, lots of ball-socket joints you can chop up. They're sturdy joints, but you can always find ways to reinforce them if you have to.

Otherwise, look into stuff like lamps with goosenecks and harvest the bendy shafts for bendy joints. You might even find useful stuff in the kitchen section of stores.

Buy grab bags of revoltech joints on ebay.

There are also joints for stuff like gundams and figmas etc that are sold on blister cards. They're mainly ball-socket joints.

You can also buy garbage Marvel Legends figures for like $5 and harvest joints.

LEGO makes a lot of parts that work as joints.