Thanks for the document, Dinodragongod! Let me add a couple I found, which I also have posted on the Wiki!
- Bottled Firewater: Bottled Flame + Bottled Water
- Cactus: Flower + [Weapon]
- Crucible: Concrete + Sand
- Fireball: Charcoal + Lightning
- Freezer: Fan + Water
- Lava: Plasma + Gravel
- Lava: Plasma + Iron
- Lightbulb: Glass + Wire
- Pulp: Water + Paper
- Pulp: Water + Saw Dust
- Tempered Sword: Flame Sword + Water
- Tree: Plant + [Plant Food]
- Wood: Axe + Tree
Anyway, it's 5 AM, and I've been staying up too late trying to figure out different combinations for too long! Hoping to find more tomorrow! (If I actually play it tomorrow.)