Birthday wishlist help

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It is my birthday in the middle of March. Because I don't ask for run-of-the-mill things my family makes me write my wish list now (So they can order it online and ship it). I need help thinking of ideas but the absolute max is $40 maybe $50. So far, I have: an fm radio broadcaster circuit, pieces for making a mechanical clock, strobe circuit board (the ones you find in cameras to make tazers), fire piston, iron filings, 4 channel remote control module, 100X pocket microscope, and conductive ink. My family is very large and I have to think of more things that there are people or they will go off on tangents so please help me think of cool things like above to add to the list!