here's one I made earlier en · X
Etymology
In reference to the British children's TV series Blue Peter. Presenters would use the phrase while demonstrating toys and other items that children could make themselves from common household items such as washing-up liquid bottles and toilet roll tubes, often with the help of "sticky-backed plastic".
Meanings
-
(UK, humorous) Said when presenting or demonstrating something, in order to suggest that it is difficult or time-consuming to make.
I won't show you how to make the dolls house now since I don't have my glasses with me, but here's one I made earlier.