Hybrid meetings often begin with social awkwardness and asymmetric participation, particularly for remote attendees who lack access to informal, co-present interaction. We present MagHeart, a multimodal system that explores symmetric icebreaking in hybrid meetings through playful LEGO-based avatar co-creation and a tangible magnetic device that represents a remote participant's heartbeat as an ambient presence cue. By combining creative co-creation with abstract bio-feedback, MagHeart rethinks how remote participants can become materially and perceptually present during meeting openings. We report findings from a scenario-based exploratory study combining quantitative and qualitative data, examining participants' anticipated engagement, perceived social presence, and future-use intentions from both co-located and remote perspectives. Our results highlight opportunities for playful, embodied icebreakers to support early hybrid interaction, while also surfacing tensions around privacy, distraction, and contextual appropriateness. This work contributes design insights and open questions for future hybrid meeting tools that balance playfulness, embodiment, and social sensitivity.

翻译：混合会议常以社交尴尬和参与不对称为开端，远程参会者尤其难以获得非正式的同场互动体验。本文提出MagHeart——一个多模态系统，旨在通过基于乐高的趣味化身共创，以及将远程参与者心跳表征为环境存在线索的实体磁力装置，探索混合会议中的对称性破冰机制。该系统将创意协作与抽象生物反馈相结合，重新构想了远程参与者如何在会议开场阶段实现物质与感知层面的在场性。我们通过融合量化与质性数据的场景化探索性研究，从共处一地与远程参与的双重视角，考察了参与者预期的参与度、感知社交临场感及未来使用意向。研究结果揭示了趣味化、具身化的破冰活动对早期混合互动的支持潜力，同时也凸显了隐私、注意力分散与情境适配性等方面的矛盾。本研究为未来兼顾趣味性、具身化与社会敏感性的混合会议工具提供了设计启示与开放性问题。