140 Romantic and Unique Marriage Proposal Ideas - Estate Diamond Jewelry Effort Level: Medium; Cost Estimate: Around $50, including the tray and the cover. Serving your loved one breakfast in bed is the ultimate way to show your affection. To transform this indulgence into a proposal, hide an engagement ring under a dome food plate cover. Organize a Spa Day; Effort Level: Medium; Cost Estimate: Around $50, including ...