diff --git a/oxdjango/fields.py b/oxdjango/fields.py
new file mode 100644
index 0000000..e556ecc
--- /dev/null
+++ b/oxdjango/fields.py
@@ -0,0 +1,47 @@
+from django.db import models
+from django.utils import simplejson as json
+
+
+class DictField(models.TextField):
+    """DictField is a textfield that contains JSON-serialized dictionaries."""
+
+    # Used so to_python() is called
+    __metaclass__ = models.SubfieldBase
+
+    def to_python(self, value):
+        """Convert our string value to python after we load it from the DB"""
+        if isinstance(value, dict):
+            return value
+
+        value = json.loads(value)
+        assert isinstance(value, dict)
+        return value
+
+    def get_db_prep_save(self, value):
+        """Convert our JSON object to a string before we save"""
+        assert isinstance(value, dict)
+        value = json.dumps(value)
+        return super(DictField, self).get_db_prep_save(value)
+
+
+class TupleField(models.TextField):
+    """TupleField is a textfield that contains JSON-serialized tuples."""
+
+    # Used so to_python() is called
+    __metaclass__ = models.SubfieldBase
+
+    def to_python(self, value):
+        """Convert our string value to JSON after we load it from the DB"""
+        if isinstance(value, tuple):
+            return value
+
+        value = json.loads(value)
+        assert isinstance(value, list)
+        return tuple(value)
+
+    def get_db_prep_save(self, value):
+        """Convert our JSON object to a string before we save"""
+        assert isinstance(value, tuple)
+        value = json.dumps(value)
+        return super(TupleField, self).get_db_prep_save(value)
+
diff --git a/oxdjango/shortcuts.py b/oxdjango/shortcuts.py
index 4505b53..1c6913f 100644
--- a/oxdjango/shortcuts.py
+++ b/oxdjango/shortcuts.py
@@ -2,7 +2,10 @@
 # vi:si:et:sw=4:sts=4:ts=4
 
 from django.http import HttpResponse
-from django.utils import simplejson
+try:
+    import simplejson
+except ImportError:
+    from django.utils import simplejson
 from django.conf import settings
 
 def render_to_json_response(dictionary, content_type="text/json"):
diff --git a/oxdjango/utils.py b/oxdjango/utils.py
new file mode 100644
index 0000000..876ac94
--- /dev/null
+++ b/oxdjango/utils.py
@@ -0,0 +1,41 @@
+from django.http import HttpResponse,Http404
+from django.core.servers.basehttp import FileWrapper
+from django.conf import settings
+
+import mimetypes
+import os
+
+def basic_sendfile(fname,download_name=None):
+    if not os.path.exists(fname):
+        raise Http404
+
+    wrapper = FileWrapper(open(fname,"r"))
+
+    content_type = mimetypes.guess_type(fname)[0]
+    response = HttpResponse(wrapper, content_type=content_type)
+    response['Content-Length'] = os.path.getsize(fname)
+
+    if download_name:
+        response['Content-Disposition'] = "attachment; filename=%s"%download_name
+
+    return response
+
+def x_sendfile(fname,download_name=None):
+    if not os.path.exists(fname):
+        raise Http404
+
+    content_type = mimetypes.guess_type(fname)[0]
+    response = HttpResponse('', content_type=content_type)
+    response['Content-Length'] = os.path.getsize(fname)
+    response['X-Sendfile'] = fname
+
+    if download_name:
+        response['Content-Disposition'] = "attachment; filename=%s"%download_name
+
+    return response
+
+if getattr(settings,'SENDFILE',False) == 'x_sendfile':
+    sendfile = x_sendfile
+else:
+    sendfile = basic_sendfile
+
diff --git a/oxdjango/widgets.py b/oxdjango/widgets.py
new file mode 100644
index 0000000..b22e57e
--- /dev/null
+++ b/oxdjango/widgets.py
@@ -0,0 +1,9 @@
+import django.newforms as forms
+from string import Template
+from django.utils.safestring import mark_safe
+
+class FirefoggWidget(forms.FileInput):
+  def render(self, name, value, attrs=None):
+    tpl = Template(u"""<h1>This should be a Firefogg widget for $name, current value: $value</h1>""")
+    return mark_safe(tpl.substitute(name=name, value=value))
+