Combining two materials at a crafting table yields one of the following items the full crafting sheet with clear quality is posted below too:

Toad + Crystal = Dart Frog
(Fires venom crystal that causes hit player to have inverted movement)

Toad + Toad = Frog Balloon
(Big jump, no fall damage — glide effect)

Toad + Rock = Frogleather Blade
(Melee sword with a tongue-blade)

Toad + Log = Frog Stick
(Steals enemy-held items with sticky tongue occasionally)

Toad + Bounce Mush = Spore Frog
(Obscures vision with thick spores)

Log + Log = Walking Stick
(Movement speed boost)

Log + Bounce Mush = Fungal Walking Stick
(Speed + jump boost)

Log + Crystal = Levitator
(Levitate yourself or enemies)

Bounce Mush + Crystal = Ray of Shrink
(Temporarily shrink target)

Rock + Rock = Thrumming Stone
(Spell/projectile null zone)

Rock + Crystal = Golem
(Summons AI ally immune to magic)

Rock + Bounce Mush = Boinger
(Bounce-off-attack sword)

Rock + Log = Silverseed Bramble
(Ground root trap — causes thorny growth)

Crystal + Crystal = The Orb
(See through opponent’s eyes)

Excalibur Hilt + Blade = Excalibur
(One-hit kill legendary sword)