Containers were always going to be pretty much off-limits with the VERB NOUN restriction of the jam.
There is usually a way around most things. What *exactly* are you trying to code?
You mentioned a paper bag and a sandwich earlier? Was that a real example? Is the idea that you take the sandwich out of the bag and you put something else in it later?
When I was talking about item swaps, etc, I was thinking of things like... OPEN BAG/EMPTY BAG... You find a sandwich... (swap 'full bag' with 'empty bag', create 'sandwich')
and later on you may...
FILL BAG... You fill the bag with sand from the shore. (swap 'empty bag' with 'bag full of sand')
or
HIDE APPLE/PUT APPLE (trying to get around the two word restriction!)... You hide the apple in the paper bag...
I guess, technically, you could code your own container routine by using the location movement trick I mentioned in another thread... Having a'blank' location set aside as the 'container insides', but that would really need (like any container puzzle really) four words to work, rather than the two that have been specified in the jam.