Connections Hint Today Wed, Jul 3 #408

Need help with Connections puzzle #408 on Wed, Jul 3? Get your daily connections hint today! Find the hidden links between these 16 words: BRAINSTORM, IDEATE, SPITBALL, WORKSHOP, CONCRETE, MATERIAL, REAL, SOLID, BIRTHDAY, CRUMB, MARBLE, POUND, CURVEBALL, PARTY, TANTRUM, WRENCH