Fidelity Youth Account — a real, free brokerage + debit account for teens 13–17. The teen owns it (with you as the linked parent), can invest in stocks & ETFs, has no account fees or minimums, and gets a debit card. It's the cleanest on-ramp to investing for a kid this age. (At 18 it converts to a standard account in their name.)
Pick a simple, repeatable rule so it actually happens — e.g. [X]% of every gift and all summer earnings go straight into the account, plus an optional $[Y]/month auto-transfer. Simple beats perfect; consistency is the whole game.
If your teen has earned income (a real summer job, a W-2, or documented self-employment), they can put up to that amount (max $7,000/yr) into a Roth IRA — where it grows 100% tax-free for the rest of their life. A few hundred dollars of summer money at 14, left alone, can become tens of thousands by retirement. This is the single highest-leverage thing most families miss. We'll confirm eligibility and set the contribution.
Long-term, low-cost, boring-on-purpose: a broad-market index fund/ETF, set-and-hold. We're not picking hot stocks or timing the market — we're teaching the habit and letting time do the work. You and your child will both understand exactly what it's in and why.
Money grows better with a target. Pick one (or a few): [ a first car · a year in Israel · college · a future wedding · "just let it grow" ]. Your dashboard tracks the balance against the goal so progress is visible.