Most of the time, I try to do spellwork with the intent aligned with a specific element in order to use the energy of that element. Here are some ideas for choosing a type of spell based on its elemental alignment.
charge herbs, stones, etc and throw into a moving body of water, such as a river, stream, or ocean. You can use a pond or lake, but I think the moving water has more effect.
Take a ritual bath with oils or herb blends suited for your purpose. The bath itself is cleansing, and soaking in the herbs, oils, and water while focusing on intent/chanting can be super powerful.
Carve runes or sigils into soap or bath bomb and use in bath. As the runes/sigil disappear, the spell is released.
Draw sigils into dirt with a stick/finger, let rain wash it away or pour water over it to release (this is also an earth spell)
Make teas/potions with edible(be careful!) herbs
Do a blessing or chant over wine or other beverages for yourself or to share any time (kitchen witchery is fantastic!)
Wash items with blessed and charged water to cleanse and purify. This can be ritual tools or just anything that you feel needs to be cleansed of negative energy.
Carve names, words, runes or sigils, into fruit and bury in a pot of dirt or in the ground. Good for things that you want to have manifest slowly.
For permanent effect, bury something that will not decompose, such as a stone or a glass bottle filled with items, herbs, images, etc.
Carve spells into wood or burn symbols into wood.
Recharge stones by burying them in dirt, sand, or salt
Collect dirt or sand from locations with good energy to use in rituals
Cooking! Specifically baking. (this can also be a fire spell, depending on what your’re making)
Place charms and other charged items in high locations or tie them onto tree branches
Create wind chimes or charms to hang in windows or outside near your home
Use incense to cleanse items and banish negative energy from your home
Write sigils, names, words, runes, etc on paper and burn. This can be used for manifestation or banishing
Use bonfires to raise energy
Fire gazing or fire scrying
Burn carves wax figures for banishing
Write on bay leaves and burn or place on an incense coal
These are just my associations and methods that I find useful. There are of course countless other options!