Plywood drum lid
plywood may be ok for a test burn ,but plywood is made from ureaformaldihyde glue, a known carcinogen.That would put it up there with galvanized fittings as big no no's for drum cookers.
How about a lid made from solid wood ,barn door style?Might even impart some flavour.
go drummers go!
18"weber one touch
weber genesis gasser