An insulated air mattress (Exped or Big Agnes for example; or, if your area has plenty of trees, try a hammock), a better pillow (look around, I use a LuxuryLite) and some cheap over-the-counter anti-histamines should do you (the ones that warn they may cause drowsiness like Benadryl, not the newer, more expensive, less-drowsy stuff). Try the pills at home first; some people react differently than others. Don't exceed recommended dosages, I am not a doctor, other disclaimers.