Leave it to Microsoft to provide such an exhaustive resource as this: a huge library of free downloadable templates for use with your Microsoft office products. So now you can spice up even the most basic document or file!
A few of the subcategories that might be useful to a VA practice:

Address books

Advertisements

Analysis worksheets

Announcements

Applications

Balance sheets

Banners

Bills of sale

Binder inserts

Bookmarks

Books

Bylaws, policies, and rules

Calculators

Case inserts

Catalogs

Charts

Coupons

Dividers

E-mails

Estimates

Evaluations

Instructions

Itineraries

Job descriptions

Journals

Ledgers

Logs

Maps

Menus

Notes

Outlines

Papers

Petitions

Posters

Press releases

Programs

Proposals

Sign-in and sign-up sheets

Signs

Stickers

Surveys

Other templates

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