I would recommend getting an adjustable angle oscillating desk fan, but one made of metal (not much difference in price tbh) when you can unclip the front guard to access the blades.

That way you can wipe the dust off and give the spinning part a blast of WD40 once a year to keep it running nicely for a long time.

Something like this

For context about 30cm in diameter. Should cost around €25.

If you need the height but lack the table space a similar floor fan should do though will probably cost a bit more.