Overconsumption persists despite growing awareness of its social, environmental, and financial harms, revealing a gap between attitudes and the consumptive behaviours shaped by digital consumer environments. Social media platforms have transformed how young people engage with consumption by embedding purchasing within spaces designed for entertainment, social interaction, and identity formation. Within these environments, algorithmic recommendations, frictionless payment systems, and persistent advertising compress the distance between exposure and purchase, making consumption more ambient and difficult to resist. Meaningful intervention requires restoring user agency through system-level design strategies that interrupt low-friction consumption behaviours, support more intentional decision-making, and expand alternative ways of meeting social, emotional, and material needs. This study investigates how design can support reduced consumption among Canadian youth aged 18-25 through a mixed qualitative approach combining semi-structured interviews, horizon scanning, and a participatory co-design workshop. Findings indicate that consumption is closely tied to identity and social participation and is reinforced by digital environments that prioritize speed and visibility, constraining youths’ ability to act on their intentions. This purchasing behaviour is further magnified by uncertainty and nihilism about the future which in turn motivates hedonic, joy-seeking purchasing behaviours. The research identifies two complementary directions for intervention: introducing moments of reflection within high-speed digital systems and strengthening alternative infrastructures that reduce reliance on purchasing. Insights from the co-design process informed a portfolio of interventions aimed at making more intentional relationships with consumption both viable and desirable, highlighting opportunities for designers, businesses, and policymakers to reshape consumer environments and restore agency.