diff --git a/app/models/account/signal_account.rb b/app/models/account/signal_account.rb
index dbacfd04e..55dc43e33 100644
--- a/app/models/account/signal_account.rb
+++ b/app/models/account/signal_account.rb
@@ -2,9 +2,7 @@ module Account::SignalAccount
   extend ActiveSupport::Concern
 
   included do
-    unless Rails.application.config.x.local_authentication
-      belongs_to :signal_account, class_name: "SignalId::Account", primary_key: :queenbee_id, foreign_key: :queenbee_id, optional: true
-    end
+    belongs_to :signal_account, class_name: "SignalId::Account", primary_key: :queenbee_id, foreign_key: :queenbee_id, optional: true
   end
 
   class_methods do
diff --git a/bin/dev b/bin/dev
index 751132139..fc5f67dc6 100755
--- a/bin/dev
+++ b/bin/dev
@@ -1,8 +1,14 @@
 #!/usr/bin/env sh
 
 echo "Login with david@37signals.com / secret123456 to:"
-echo "  - 37signals: http://fizzy.localhost:3006/735464785"
-echo "  - Honcho:    http://fizzy.localhost:3006/175932900"
+bin/rails runner - <<EOF
+  ApplicationRecord.with_each_tenant do |tenant|
+    next unless tenant =~ /\A\d+\z/
+    if Account.sole.signal_account || Rails.application.config.x.local_authentication
+      puts "  - #{Account.sole.name}: http://fizzy.localhost:3006/#{Account.sole.queenbee_id}"
+    end
+  end
+EOF
 
 if [ -f tmp/solid-queue.txt ]; then
   export SOLID_QUEUE_IN_PUMA=1
diff --git a/db/seeds.rb b/db/seeds.rb
index 7d66fd2bc..72435ecaf 100644
--- a/db/seeds.rb
+++ b/db/seeds.rb
@@ -10,17 +10,31 @@ def seed_account(name)
   puts " #{elapsed.round(2)} sec"
 end
 
-def create_tenant(signal_account_name)
-  signal_account = SignalId::Account.find_by_product_and_name!("fizzy", signal_account_name)
-  tenant_name = signal_account.queenbee_id
+def create_tenant(signal_account_name, bare: false)
+  if bare
+    queenbee_id = Digest::SHA256.hexdigest(signal_account_name)[0..8].to_i(16)
+  else
+    signal_account = SignalId::Account.find_by_product_and_name!("fizzy", signal_account_name)
+    queenbee_id = signal_account.queenbee_id
+  end
 
-  ApplicationRecord.destroy_tenant tenant_name
-  ApplicationRecord.create_tenant(tenant_name) do
-    account = Account.create_with_admin_user(queenbee_id: signal_account.queenbee_id)
+  ApplicationRecord.destroy_tenant queenbee_id
+  ApplicationRecord.create_tenant(queenbee_id) do
+    account = if bare
+      Account.create(name: signal_account_name, queenbee_id: queenbee_id).tap do
+        User.create!(
+          name: "David Heinemeier Hansson",
+          email_address: "david@37signals.com",
+          password: "secret123456"
+        )
+      end
+    else
+      Account.create_with_admin_user(queenbee_id: queenbee_id)
+    end
     account.setup_basic_template
   end
 
-  ApplicationRecord.current_tenant = tenant_name
+  ApplicationRecord.current_tenant = queenbee_id
 end
 
 def find_or_create_user(full_name, email_address)
@@ -65,5 +79,6 @@ def create_card(title, collection:, description: nil, status: :published, creato
 end
 
 # Seed accounts
+seed_account "cleanslate"
 seed_account "37signals"
 seed_account "honcho"
diff --git a/db/seeds/cleanslate.rb b/db/seeds/cleanslate.rb
new file mode 100644
index 000000000..4a672d348
--- /dev/null
+++ b/db/seeds/cleanslate.rb
@@ -0,0 +1 @@
+create_tenant "cleanslate", bare: true
diff --git a/script/create-local-user.rb b/script/create-local-user.rb
new file mode 100755
index 000000000..7b303774f
--- /dev/null
+++ b/script/create-local-user.rb
@@ -0,0 +1,33 @@
+#!/usr/bin/env ruby
+#
+# This script creates a new user that can be logged into via LOCAL_AUTHENTICATION, avoiding Launchpad/37id integration.
+# In order to login as this user, you must set the `LOCAL_AUTHENTICATION` environment variable when running the Rails server:
+#
+#   LOCAL_AUTHENTICATION=1 bin/dev
+#
+
+require_relative "../config/environment"
+
+unless Rails.env.development?
+  puts "ERROR: This script is intended to be run in development mode only."
+  exit 1
+end
+
+if ARGV.length < 2
+  puts "Usage: #{$0} <email> <tenant>"
+  exit 1
+end
+
+email_address = ARGV[0]
+tenant = ARGV[1]
+
+ApplicationRecord.with_tenant(tenant) do
+  user = User.create!(
+    name: email_address.split("@").first,
+    email_address: email_address,
+    password: "secret123456"
+  )
+
+  puts "Created: "
+  pp user
+end