Almost everything in your house and outdoors can be incorporated into a spell. 
Some ideas are:
- String and ribbon to bind, tie together herbal charms, decorate spell jars etc.
- Jars for magical spells and curses
- Herbs, flowers and crystals to aid their energy
- Bits of material for spell pouches, sachets and poppets etc
- Board game pieces for sympathetic magic
- Rocks and stones for luck, protection and wishes
- Bones for protective charms
- Sweet pantry condiments and ingredients for sweetening jars
- Sour sauces and pantry items for curses
- Ice for freezing spells
- Iron nails and other iron products for protection charms
- Cobwebs for protection
- Salt for protection
- Fruits for charms of prosperity, banishing  or protection
- Christmas baubles for “witch balls”
- Feathers (legally obtained) for protection charms
- Needles and pins for “witch bottles” and baneful magic
- Venomous bugs for curses
- Ashes and charcoal for curses
- Bark/leaves from a tree that has been struck by lightning for baneful magic
- Moon water, rain water, storm water and ocean water for certain magics
- Hair from a predatory animal for baneful or protective magic
- Candles to aid their energy
- Human hair for protection or drawing/painting magical symbols
- Coins for prosperity