Like the original poster, I've found a number of machines that require a Snow Leopard installer higher than what may be available (since the owners of those machines have invariably lost their discs and/or have bricked their optical drives). My method (and I will freely admit this was not my original idea) is to use a disk image of a 10.6.8 working HD that has not yet been through the personalization. I 'restored' this image to a few destinations—a toolkit, of sorts—a USB hard drive, FireWire HD, USB flash drive, and even a SDHC card. Then I went through the personalization with each one. Finally, I copied the original disk image (as a .dmg) to these destinations. Obviously, you need something like a 16GB flash drive or SDHC card.
I can then boot the intended 'target' machine using one of these devices and use Disk Utility to restore the 'virgin' 10.6.8 disk image to the machine's hard drive. With a FireWire machine, however, it's often easier to boot the target machine in target disk mode, plug it into my iMac, and do the restore from there.
As a side benefit, there are very few software updates then required.

New 2 Disc set in original sleeves. Works with MacBook. Install disc Mac OS version 10.6.4, Disc version 1.0, 2Z691-6742-A. Applications install DVD AHT version 3A200, Disc version 2.0, 2Z691-6773-A. Inserted OS X Snow Leopard installation disc and boot from there. Opened up the Disk Utility and partitioned a hard drive (called Hard Drive2) via the Partition section as instructed by the guide. Formatted in MAc OS Extended (Journaled).

Let macOS manage space between multiple volumes

With Apple File System (APFS), the file system introduced in macOS 10.13, you can easily add and delete volumes on your storage devices. APFS-formatted volumes automatically grow and shrink—you never have to repartition a storage device again.

Keep your external storage devices secure

When you get a new flash drive or other storage device, format it as APFS and encrypt it with a password to protect its contents.

Utility Disk Download For Apple Macbook Pro Running Snow Leopard Boot

Give your disk a checkup

If you’re having problems with a disk, Disk Utility can check the disk and repair problems it detects.

Utility Disk Download For Apple Macbook Pro Running Snow Leopard Dmg

To explore the Disk Utility User Guide, click Table of Contents at the top of the page, or enter a word or phrase in the search field.