Low Tech covers some TL0-2 traps, including deadfalls, nets, pits (with and without spikes), snares, tripwires, needles, and caltrops (pp. 122-123).
Dungeon Fantasy Traps includes a lot of additional variations, but many wouldn't fit in a realistic game (e.g., pits of acid or lava, magical effects, etc.). But it's fairly easy to extrapolate appropriate mechanics for a wide variety of mundane low-tech traps.