Good at twenty pounds, not a cheap version of something expensive
A real budget ceiling you are not going to quietly exceed.
Shortbudgetideas
Gift ideas under twenty pounds that are complete at that price rather than entry-level versions of expensive things. Rough bands only, no exact prices.
Making it yours
Paste your own material where the prompt asks for it. Everything above that line is instruction, not content.
Delete any rule that does not apply to you. A shorter prompt that fits beats a thorough one that does not.
If the answer comes back vague, add a line saying what you do not want. Constraints work better than encouragement.
Finding a gift. Ideas built from what you know about the person: to a budget, made by hand, or needed tonight.