Hi Keith,
You are right that the little pencil is gone in newer Windows 11 builds. You can still turn on Bluetooth and bring the button and tray icon back with the steps below.
First, turn Bluetooth on. Press Win+I to open Settings. Open Bluetooth and devices. If the Bluetooth switch is Off, turn it On. Give it a few seconds to initialize.
Next, add the Bluetooth button back to Quick Settings. Press Win+A to open Quick Settings. At the top right, click the small gear labeled Edit quick settings. Choose Add, pick Bluetooth, then click Done. If you do not see the gear, right click any tile inside Quick Settings and choose Edit, then Add.
Finally, show the classic Bluetooth tray icon. In Settings, still under Bluetooth and devices, click More Bluetooth settings. In the window that opens, check Show the Bluetooth icon in the notification area, then OK. The icon should appear near the clock when Bluetooth is on.
If Bluetooth does not appear anywhere in Settings, that points to a missing or disabled driver. Tell me if that is the case and I will give you the exact driver steps for your model.