diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
index a03de550681..35bffdd148f 100644
--- a/.github/copilot-instructions.md
+++ b/.github/copilot-instructions.md
@@ -106,7 +106,7 @@ cargo run --release -- -m test test_unicode -k test_unicode_escape
 
 ### Determining What to Implement
 
-Run `./whats_left.py` to get a list of unimplemented methods, which is helpful when looking for contribution opportunities.
+Run `./scripts/whats_left.py` to get a list of unimplemented methods, which is helpful when looking for contribution opportunities.
 
 ## Coding Guidelines
 
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 7fc4c653189..5b756e8af7e 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -412,7 +412,7 @@ jobs:
           target/release/rustpython -m venv testvenv
           testvenv/bin/rustpython -m pip install wheel
       - name: Check whats_left is not broken
-        run: python -I whats_left.py
+        run: python -I scripts/whats_left.py
 
   lint:
     name: Check Rust code with clippy
diff --git a/.github/workflows/cron-ci.yaml b/.github/workflows/cron-ci.yaml
index 9d549602bc6..c942364064c 100644
--- a/.github/workflows/cron-ci.yaml
+++ b/.github/workflows/cron-ci.yaml
@@ -94,8 +94,8 @@ jobs:
         run: cargo build --release --verbose
       - name: Collect what is left data
         run: |
-          chmod +x ./whats_left.py
-          ./whats_left.py --features "ssl,sqlite" > whats_left.temp
+          chmod +x ./scripts/whats_left.py
+          ./scripts/whats_left.py --features "ssl,sqlite" > whats_left.temp
         env:
           RUSTPYTHONPATH: ${{ github.workspace }}/Lib
       - name: Upload data to the website
diff --git a/README.md b/README.md
index c4f7bfb1d60..6949c6e66e2 100644
--- a/README.md
+++ b/README.md
@@ -245,7 +245,7 @@ To enhance CPython compatibility, try to increase unittest coverage by checking
 Another approach is to checkout the source code: builtin functions and object
 methods are often the simplest and easiest way to contribute.
 
-You can also simply run `python -I whats_left.py` to assist in finding any unimplemented
+You can also simply run `python -I scripts/whats_left.py` to assist in finding any unimplemented
 method.
 
 ## Compiling to WebAssembly
diff --git a/demo_closures.py b/demo_closures.py
deleted file mode 100644
index 0ed673a94fd..00000000000
--- a/demo_closures.py
+++ /dev/null
@@ -1,12 +0,0 @@
-def foo(x):
-    def bar(z):
-        return z + x
-
-    return bar
-
-
-f = foo(9)
-g = foo(10)
-
-print(f(2))
-print(g(2))
diff --git a/crawl_sourcecode.py b/scripts/crawl_sourcecode.py
similarity index 100%
rename from crawl_sourcecode.py
rename to scripts/crawl_sourcecode.py
diff --git a/whats_left.py b/scripts/whats_left.py
similarity index 99%
rename from whats_left.py
rename to scripts/whats_left.py
index 99b840f9da7..f2019ba4eb1 100755
--- a/whats_left.py
+++ b/scripts/whats_left.py
@@ -29,7 +29,7 @@
 
 if not sys.flags.isolated:
     print("running without -I option.")
-    print("python -I whats_left.py")
+    print("python -I scripts/whats_left.py")
     exit(1)
 
 GENERATED_FILE = "extra_tests/not_impl.py"
@@ -39,7 +39,7 @@
     sys.exit(f"whats_left.py must be run under CPython, got {implementation} instead")
 if sys.version_info[:2] < (3, 14):
     sys.exit(
-        f"whats_left.py must be run under CPython 3.14 or newer, got {implementation} {sys.version} instead. If you have uv, try `uv run python -I whats_left.py` to select a proper Python interpreter easier."
+        f"whats_left.py must be run under CPython 3.14 or newer, got {implementation} {sys.version} instead. If you have uv, try `uv run python -I scripts/whats_left.py` to select a proper Python interpreter easier."
     )