Dynamical scoping

[George Sakkis]

What's the best way to simulate dynamically scoped variables ala
Lisp ? The use case is an open-ended set of objects that need to
access the same piece of information (e.g. a  dict, a ConfigParser
object, a logger etc.). I know that the "proper" OO and functional way
is to pass the information explicitly but that's less maintenable in
the long run. Also this is in a web environment so the information
can't be really global (though within-thread global should be fine).
Is there some standard pattern for this scenario ?

George