Don’t just wrap it in electrical tape – skoolbwoy error.
If you just ‘tape’ certain parts of the frame people know you’re trying to ‘hide’ a good bike.
Collect stickers. anything. Those little Stickers off apples, bananas, magazines, electrical warning stickers, no smoking stickers, those stickers charities give you when you give ’em a £1. I even put a glow-in -the-dark spongebob squarepants band-aid on my steed
These will start peeling and scuffing soon enough as they can’t take the wear and random, messy, scuffed, worn assortment of stickers makes your bike look ugly and will protect the frame. You’ll still be able to peel it all off with a heatgun/hairdryer and a lot of patience
A tidy ‘tape up’ is a nice bike that someones trying to ‘hide’.
EDIT: I kept a £2k Cove Handjob as my ‘runaround’ for 3 years. Locked in central London (just off Oxford Street) 5 days a week, 9 hrs a day. I then fitted mudguards, cheap rigid fork, and ‘hack wheels and it spent another 6 months on Victoria Station platform he he. (2 locks mind)