Self-inking rubber stamps can be used on a variety of documents, including:
1. **Business Documents**: Invoices, purchase orders, and receipts can be stamped for authentication or to indicate payment status.
2. **Legal Documents**: Contracts, agreements, and affidavits can be stamped to signify approval or notarization.
3. **Administrative Papers**: Internal memos, reports, and correspondence can be stamped for categorization or to mark as reviewed.
4. **Financial Documents**: Checks, deposit slips, and financial statements can be stamped for endorsement or verification.
5. **Educational Materials**: Certificates, transcripts, and report cards can be stamped to certify authenticity or completion.
6. **Mail and Packages**: Envelopes and parcels can be stamped with return addresses or postage information.
7. **Event Materials**: Invitations, tickets, and passes can be stamped for validation or entry control.
8. **Marketing Materials**: Flyers, brochures, and business cards can be stamped with promotional messages or contact information.
9. **Personal Documents**: Diaries, journals, and scrapbooks can be stamped for personalization or decoration.
10. **Inventory and Shipping Documents**: Packing lists, shipping labels, and inventory sheets can be stamped for tracking or confirmation.
11. **Medical Records**: Prescriptions, patient files, and lab reports can be stamped for identification or authorization.
12. **Government Forms**: Applications, permits, and licenses can be stamped to indicate approval or processing status.
13. **Real Estate Documents**: Deeds, leases, and property agreements can be stamped for validation or recording.
14. **Human Resources Documents**: Employment contracts, timesheets, and performance reviews can be stamped for acknowledgment or filing.
15. **Creative Projects**: Art projects, crafts, and handmade cards can be stamped for embellishment or branding.