This paper presents a low-cost, non-invasive design concept for a multimodal neurostimulation helmet targeting Alzheimer's disease through 40Hz gamma wave entrainment. The "Adam-Bakr Platform V1.0" integrates three core systems: 1) EEG sensors for baseline brain activity monitoring, 2) LED array delivering precise 40Hz visual flicker stimulation to the visual cortex, and 3) Bone-conduction speakers providing 40Hz auditory entrainment. The device architecture is based on an Arduino Nano/ESP32 microcontroller with a perforated mesh helmet design for ventilation and modularity. This concept is inspired by preclinical studies showing that 40Hz sensory stimulation reduces amyloid load and improves cognitive function in mouse models [Iaccarino et al., Nature 2016; Martorell et al., Cell 2019]. Key features: low manufacturing cost, wearable ergonomic design, dual sensory stimulation. This work is a design proposal and proof-of-concept. No human subjects were tested. Future clinical use requires full safety testing and IRB approval. Note: This design concept is intended for future provisional patent filing. Full technical specifications and source code are withheld pending patent application. Author: Adam Emad Bakr, First-Year Secondary School Student, Egypt. Date: April 6, 2026