Restructure challenges into current and archive folders

challenges/current/current.md

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+---
+title: "September 2026: Practi-FALL Prints"
+category: "challenges"
+subcategory: "current"
+order: 1
+description: "Functional utility and everyday practicality challenge."
+tags:
+  - active
+  - functional
+  - contest
+  - challenge-010
+---
+
+[← Back to Challenges Hub](../readme.md) | [Upcoming Preview](upcoming.md)
+
+# Current Challenge: September 2026
+
+## Challenge: Practi"FALL" Prints
+
+As we head into fall, it is time to show off the practical power of 3D printing with **Practi"FALL" Prints**! 
+
+Whether it is an everyday household fix or a clever workshop tool, bring in a practical print that solves a problem or makes life easier.
+
+### The Focus: Functional Utility & Everyday Practicality
+The goal is to design or print a functional item that serves a practical purpose. This can be anything from a simple door stop, cord clip, or drawer organizer, to a crazy multi-levered bottle or can opener, tool jig, or replacement bracket!
+
+### Submission Requirements
+
+* **Physical Model**: Bring your practical print to the **September 16th, 2026** meetup.
+* **Range of Entries**: Anything functional qualifies—from simple everyday utility items to complex mechanical openers or tools.
+* **The Story**: Be ready to demonstrate or explain what problem your print solves, how you use it, and your printing/design approach (materials, infill, orientation for strength, etc.).
+
+### Judging & Prize
+
+* **Voting**: The group will vote on their favorite entry based on practical usefulness, creativity, and execution.
+* **Prize**: The winner will receive a **free spool of filament**!
+
+### Timeline
+
+* **Challenge Announcement**: August 19th, 2026 (at August meetup)
+* **Show & Tell / Voting**: September 16th, 2026 (during September meetup)
+* **Winner Announcement**: September 16th, 2026 (end of September meetup)
+
+---
+
+**This challenge is currently active for September 2026**