Some people do have the most genius ideas. I came across the idea of making customised tape over at Domesticali who, in turn, had come across the inspiration here. I have oodles of double-sided tape - having bought several rolls of it cheap at a boot sale some while ago - plus I keep hold of empty envelopes to write shopping lists on. I'd never really taken much notice of the insides of the envelopes before but when I peered in I found there was rather a pleasing variety of patterns.
So far I've only used it to do a few more 'Making Good Use' labels - although I'm rather pleased with the 'Mad Men' style patterns the tape has. I can see a lot of uses for this tape though, especially when it comes to wrapping presents for the males in the family. Brown paper and lace wrapped pressies wouldn't do it for them but brown paper sealed with blue or grey customised tape just might.
ETA. Just found even more fabulous customised tape ideas at Ginger and George here.