Suet feeders make great nesting material holders in the spring. Just add string, hair, yarn or torn pieces of cloth.
Hosta leaves make great backgrounds for displaying small cut flowers.
When trying to attract butterflies to your garden , don't forget to add some ripe fruit.
Dill and fennel are both hosts for the Black Swallowtail Butterfly. If you plant both dill and fennel in the garden, they will cross pollinate and your dill seed will not produce a good culinary (cooking) dill.
Water seedlings with Chamomile tea to prevent damping off.
Twine is a good thing to keep handy in the garden or on the potting bench. A terracotta pot turned upside down will hold the twine and a pair of scissors or knife.
For dispersing very small seeds, add sand and put into an empty spice shaker. The sand will help you to plant more evenly and see where the seeds have been planted.
Adding pepper to pots helps keep out masked bandits. Just remember to add more after a rain.
When gathering seeds in the fall , save some seed heads; they make nice dried arrangements. If you need more color, consider some spray paint or glitter.
When bringing fresh fruits or vegetables inside, you will most likely attract fruit flies. A small saucer or glass jar with cider vinegar will attract and drown the flies.
Toads absorb water through their skin, so shallow dishes of water will attract toads to the area of the garden where you need insect control.