For masking, I've had good results with:
- Yellow Frog tape ("Delicate Surfaces")
- Tamiya tape
- Testor's masking tape
(
https://www.amazon.com/TESTORS-8869-Masking-Assortment-TESR8869/dp/B007KMW5NQ)
I've also used the Frog tape to protect the body tube area between the fins from excess glue when applying fillets.
To cover a large area, I might use the Frog tape for the edge, and then tape newspaper pages onto it with:
- regular masking tape.
It's also good for friction fitting a nose cone or a motor.
To protect the inner body tube from recessed motor exhaust, I've used:
- Aluminum foil tape
(disclaimer: not yet launched or tested)
To tape a 9V battery onto a dual-deployment E-Bay, I've used:
- Electrical tape
That's about it.