| 
 | The ornamental design for a handheld portable heating stick, as shown and described. | |||||||||||||||||
Any views not shown forms no part of the claim.
A cylinder barrel with a:
1. Heating element tip
2. Temperature Display
3. Solar Panel
4. USB or Sonic Port
5. Battery Compartment
6. Temperature Controls
7. Power Percentage Indicator
8. Power Button/Indicator Light
9. Removable Cap
A figure drawing description of the appearance of the underside is not depicted in drawings as the underside is only a smooth barrel with no ornamental design.
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