Chasing pavements

I'm doing something I abhor. Wearing sneakers where heels should be, in business clothes.
I'm not much for function over form and my daily commute may be a short walk, but those little plastic caps on stiletto heels can cost up to ten quid to get fixed. So I'm going cheap (and short arse) on it.
My alternatives to kappa kicks from the boys section of Sports Direct? Maybe wear crocs instead (though I have picked my side on the love/hate split on that one already) or go hipster with purple high tops?