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Hi Matthew_Pollock,
Thank you for choosing Microsoft community.
Based on your description, I've checked from Compare Office 365 Nonprofit Plans | Office 365 (microsoft.com) that there're no desktop client for Office 365 like Word, Excel, Outlook, etc. for both Microsoft 365 Business Basic Donation and Office 365 E1 Donation.
However, you may further confirm by submitting your request on Nonprofit offers (microsoft.com).
Also for your reference:
Thanks & Stay safe,
Qian