A datapack with a simple premise, and complex ramifications for the game: You are unable to craft any item which some kind of villager is able to sell to you.

This includes:

• All tools made of stone, iron, & diamond (including shears)
  
• Bows, crossbows & fishing rods
• All armor
• All beds & banners
• Maps, compasses & clocks
• Most artificial blocks used in building

This does NOT include:

• Tools made of wood & gold
  
• TNT
• All villager job site blocks
• Enchanting tables
• Pretty much everything made of wood

The .zip file listed here contains additional datapacks for some minor variations on the idea. The "lenient" versions allow you to craft beds colored white, light gray, gray, black, & brown. The "ZDBP" versions give zombies a small chance to drop blaze powder (hence the acronym, for Zombies Drop Blaze Powder). Note that you should only install one of these datapacks onto your world, and trying to add multiple of them will probably result in paradoxes, or just more lag than usual.