To craft Warframes you need materials. Here is a list of Warframe planets and what materials you find there:
Phobos[edit]
Bosses - Mag, Miter, and Twin Gremlins
Rubedo
Morphics
Plastids
Alloy mask
Mercury[edit]
Standard Blueprint - Cronus Longsword , Seer Pistol Receiver, Seer Pistol Barrel, Seer Pistol blueprint
Morphics - Semi-rare, more likely to drop off the Tolstoj boss
Ferrite
Polymer Bundle
Detonite Ampule
Venus[edit]
Boss blueprint - Rhino Systems, Chassis, Helmet
Alloy Plate - Semi-rare, more likely to drop off the Fossa boss
Polymer Bundle
Circuits
Fieldron Sample
Earth[edit]
Boss Blueprint - Hydroid Chassis, System, Neuroptic
Ferrite
Rubedo - Most likely to drop off the Everest boss, common drop in small amounts on Lua
Neurodes - More likely to drop off the Everest boss and on cambria
