First please drop the units we rec. The units will not make most players inventory.
Here are my suggestions for the daily Scratcher.
1. Valor
2. Gold
3. Skill Point
4. Energy or Stamina Refill
5. Health Pack
6. Frontline Arjun or Frontline Main Carrier
7. Temp +1 Building Upgrade for a one time upgrade
8. Cash
Please feel free to add any suggestions.