Supporting people with dementia to live meaningful and well lives is essential to their wellbeing and quality of life. Sensory activities offer important and accessible opportunities to meet the needs of people with dementia through a person-centred lens. This thesis explores two methods of sensory activities for people with dementia. In Part A, an original piece of research explores the experience of care home residents with dementia and staff using an olfactory activity, and its impact on wellbeing and cognition. Findings from this mixed methods pilot study, highlight positive impacts on wellbeing and social connection, and the powerful role of olfactory stimuli to trigger memories and storytelling. Findings contribute to the emerging evidence base of olfaction and dementia and emphasise the need for further research. Part B of this portfolio is a systematic review exploring the experiences and impacts of intergenerational music activities for people with dementia. Quantitative and qualitative findings highlight these activities as engaging and have positive impacts on affect in people with dementia and their caregivers, and positively shift younger generation’s perspectives of dementia. Qualitative findings further explore how intergenerational music activities facilitate engagement and positive affect. Further high quality mixed-methods and quantitative research is needed to develop the evidence-base. Together, findings across this portfolio provide novel understanding of how person-centred sensory activities can support people with dementia and offer opportunities to build meaningful social connections, highlighting their research value.