Pillows:

Memory foam pillows
Contour pillows
Cooling gel pillows
Buckwheat pillows
Feather pillows
Body pillows
Mattresses:

Memory foam mattresses
Latex mattresses
Innerspring mattresses
Hybrid mattresses
Adjustable beds
Bedding:

Bed sheets (cotton, silk, bamboo, microfiber)
Duvet covers
Blankets (weighted blankets, thermal blankets)
Mattress toppers
Pillowcases
Sleep-inducing accessories:

Sleep masks
Earplugs
White noise machines
Essential oils and diffusers
Aromatherapy sleep sprays
Sleep-enhancing herbal teas
Sleep technology:

Sleep trackers
Smart alarms
Sunrise simulators
Sleep headphones
Sleep apps and meditation apps
Sleep-supportive gadgets (e.g., anti-snore devices)
Bedroom environment:

Blackout curtains or blinds
Room darkening shades
Soundproofing materials
Air purifiers
Humidifiers or dehumidifiers
Calming wall art or decorations
Sleepwear:

Comfortable pajamas
Sleep shirts or nightgowns
Sleep shorts or pants
Sleep masks and earplug sets
Bed socks or slippers
Relaxation aids:

Meditation cushions
Yoga mats and props
Stress balls or fidget toys
Relaxing music or nature sound CDs
Guided meditation or sleep hypnosis recordings
Books and resources:

Sleep science and self-help books
Sleep-related magazines or journals
Sleep trackers and journals
Sleep education materials (brochures, pamphlets)
Online sleep courses or programs
Nidra boxes:

Customized sleep kits with essential sleep products
Mindfulness or relaxation tools
Personalized sleep plans or guides
Instructional audio or video recordings
Sleep-promoting supplements or herbal remedies