diff --git a/deferred-folds.cabal b/deferred-folds.cabal
--- a/deferred-folds.cabal
+++ b/deferred-folds.cabal
@@ -1,5 +1,5 @@
 name: deferred-folds
-version: 0.9.6
+version: 0.9.7
 category: Folding
 synopsis: Abstractions over deferred folds
 description:
diff --git a/library/DeferredFolds/Defs/Unfoldl.hs b/library/DeferredFolds/Defs/Unfoldl.hs
--- a/library/DeferredFolds/Defs/Unfoldl.hs
+++ b/library/DeferredFolds/Defs/Unfoldl.hs
@@ -61,6 +61,12 @@
 instance Show a => Show (Unfoldl a) where
   show = show . toList
 
+instance IsList (Unfoldl a) where
+  type Item (Unfoldl a) = a
+  fromList list = foldable list
+  toList = foldr (:) []
+
+
 {-| Apply a Gonzalez fold -}
 {-# INLINE fold #-}
 fold :: Fold input output -> Unfoldl input -> output
diff --git a/library/DeferredFolds/Defs/UnfoldlM.hs b/library/DeferredFolds/Defs/UnfoldlM.hs
--- a/library/DeferredFolds/Defs/UnfoldlM.hs
+++ b/library/DeferredFolds/Defs/UnfoldlM.hs
@@ -65,6 +65,11 @@
 instance Show a => Show (UnfoldlM Identity a) where
   show = show . toList
 
+instance IsList (UnfoldlM Identity a) where
+  type Item (UnfoldlM Identity a) = a
+  fromList list = foldable list
+  toList = foldr (:) []
+
 {-| Check whether it's empty -}
 {-# INLINE null #-}
 null :: Monad m => UnfoldlM m input -> m Bool
diff --git a/library/DeferredFolds/Defs/Unfoldr.hs b/library/DeferredFolds/Defs/Unfoldr.hs
--- a/library/DeferredFolds/Defs/Unfoldr.hs
+++ b/library/DeferredFolds/Defs/Unfoldr.hs
@@ -55,6 +55,11 @@
 instance Show a => Show (Unfoldr a) where
   show = show . toList
 
+instance IsList (Unfoldr a) where
+  type Item (Unfoldr a) = a
+  fromList list = foldable list
+  toList = foldr (:) []
+
 {-| Apply a Gonzalez fold -}
 {-# INLINE fold #-}
 fold :: Fold input output -> Unfoldr input -> output
@@ -118,7 +123,13 @@
   Unfoldr (\ step init -> HashMap.foldrWithKey (\ key value state -> step (key, value) state) init hashMap)
 
 {-| Value of a hash-map by key -}
+{-# INLINE hashMapAt #-}
+hashMapAt :: (Hashable key, Eq key) => HashMap key value -> key -> Unfoldr value
+hashMapAt hashMap key = foldable (HashMap.lookup key hashMap)
+
+{-| Value of a hash-map by key -}
 {-# INLINE hashMapValue #-}
+{-# DEPRECATED hashMapValue "Use 'hashMapAt' instead" #-}
 hashMapValue :: (Hashable key, Eq key) => key -> HashMap key value -> Unfoldr value
 hashMapValue key = foldable . HashMap.lookup key
 
diff --git a/library/DeferredFolds/Prelude.hs b/library/DeferredFolds/Prelude.hs
--- a/library/DeferredFolds/Prelude.hs
+++ b/library/DeferredFolds/Prelude.hs
@@ -25,7 +25,7 @@
 import Data.Dynamic as Exports
 import Data.Either as Exports
 import Data.Fixed as Exports
-import Data.Foldable as Exports
+import Data.Foldable as Exports hiding (toList)
 import Data.Function as Exports hiding (id, (.))
 import Data.Functor as Exports
 import Data.Functor.Identity as Exports
@@ -52,7 +52,7 @@
 import Foreign.StablePtr as Exports
 import Foreign.Storable as Exports hiding (sizeOf, alignment)
 import GHC.Conc as Exports hiding (withMVar, threadWaitWriteSTM, threadWaitWrite, threadWaitReadSTM, threadWaitRead)
-import GHC.Exts as Exports (lazy, inline, sortWith, groupWith)
+import GHC.Exts as Exports (lazy, inline, sortWith, groupWith, IsList(..))
 import GHC.Generics as Exports (Generic)
 import GHC.IO.Exception as Exports
 import Numeric as Exports