Electrical tape may or may not be satisfactory. It tends to stretch and the adhesive tends to creep, especially under elevated temperatures, so it may fail over time. A better alternative may be filament-reinforced packing tape, the reinforcement helps prevent it from stretching and the adhesive does not creep as much as electrical tape. My rim strip of choice is Continental Easy Tape. It is thinner and slipperier than Velox cloth tape which makes tire mounting easier and does not stretch appreciably. No messy adhesive to get all over, either

+1 on not needing unavailable tools on the road for predictable needs like changing tires.