DriveLED let you monitor the disk activity of a choosen device in workbench
title bar.

Options in Tooltypes (Example):

DEVICE=brcm-emmc.device     ;the device to monitor
UNIT=1                      ;the unit to monitor
RIGHTOFFSET=20              ;the offset from the right side of the screen. Set
                             it higher,
                            ;if you already have elements in title bar
LEDCOLOUR=red or green      ;disabled = red for write and green for read

 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[Amiga]                    814    1178  69.1% -lh5- eefd Sep 18 22:56 DriveLED.info
[Amiga]                   5394   11512  46.9% -lh5- 296d Sep 18 22:58 DriveLED
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         2 files    6208   12690  48.9%            Sep 19 22:40