1. Playful:
* "The teacher tried to instill in the kids a love of reading, but they only instilled a love of silliness."
2. Alliteration:
* "Sally swiftly instilled a sense of style, singing sweetly, showing she had skills."
3. Rhyming:
* "To instill a sense of skill, the coach drilled, drilled, drilled."
4. Focus on the "instill" sound:
* "Instill, instill, instill a sense of stillness in your soul."
Important Note: These are more focused on using the word "instill" in a playful or challenging way, rather than being perfect tongue twisters with the same level of difficulty as traditional ones.