Paul_KD7HB:
Would help if you told us where you have looked.Paul
I've looked on amazon (usually I would look on AliExpress too but I need it quite fastly)
MarkT:
Cut down a 12W luxeon star sized emitter? You never mentioned heatsinking, that is going to be
the constraint to worry about, 12W is available in small packages and 12W LED will light up a small
room...
The box is small and kept together with hot glue so I think that overheating could be a problem.