On our vacation, my son Elias (age 8) has been working on a series of new classes and races for AD&D: half-ogre, half-troll, bomber, general, mage. (Actually, for Labyrinth Lord AEC if you want to pick nits.) They remind me of Arduin more than anything. More about that another time. For now, here are three sweet spells he wrote for the mage class.
This spell creates a huge elaborate lock on a door. All attempts to pick the lock of this door are twice as difficult as they would otherwise be: for these purposes halve the thief's skill.
Duration: 1 hour per caster level
This spell instills persistence in hirelings. They receive a -2 on all morale checks for the spell's duration.
Level 2 [edited]
This spell creates an invisible chain that tethers the target to one spot. He will remain tethered until he manages to roll 5d6 under his strength.