Houses IDisposable references across a function that may create new disposables over time in various scopes, making the using pattern difficult to manage. For example, the following snippet makes it hard to declare the new resource in a using statement and still have access to the resource later in the method. using (var bucket = new DisposableBucket()) { ... MyDisposableType resource = null; if (expression) { var resource = GetMyDisposableResource(); bucket.Add(resource) } ... // use resource if available // this use is outside the scope the IDisposable was found in resource?.MyFunc(); }