Bed tray pedigree?  

Reminds me of an Ikea hack...
Reminds me of an Ikea hack that was posted last year.

HA
That was my ikea hack!
(edit: the hack WoofWoof saw was mine, not the piece above)

Could it be
an Aalto piece? Sure resembles something he might have done.

Breuer
reminds me more of Breuer's nesting trays, altho they didnt have the groove at the top, and the legs were tapered more.

That recess in the top is...
That recess in the top is very good, I'd like a desk with that. Where are my paper clips? There they are!

I thought Ikea too - not Aalt...
I thought Ikea too - not Aalto or Breuer for sure.