Place in a very light position. For most plants there is no need to change the water. Keep an eye on the bulb and regularly refill so that the roots are always covered in water.
Examples of plants that can easily grow roots:
Centaurea candidissima
Chlorophytum comosum
Portulacaria afra
Aptenia cordifolia
Plectranthus australis
Tradescantia pallida purpurea
Scindapsus aureus
Schefflera arboricola
Crassula portulacea
Hedera helix
Ficus benjamina
Graptopetalum paraguayense
Kalanchoe fedtschenkoi