You missed the A1000 ram expansions and accelerators that were for sale there at the event? Boo, I saw several, but you had to dig through those boxes.
In any case, check if there's already the extra 256K behind the front cover. If not you'll want that. After that, get yourself something like the Kipper2k memory board that plugs in under the processor, or a Starboard or similar expansion that plugs into the side, and done.
