Meaning of 'These are my stuff'?

Is it all right to say ‘these are my stuff’ or ‘they are my stuff’? I mean, ‘stuff’ is an uncountable noun, so… :roll:

Hi Nessie

I’d say most people would avoid using a construction such as “these/they are my stuff”. It is perfectly OK to point to or indicate a pile/collection of various things and say “This/That is my stuff”.