The KEF come with cloth covers, but they're too elastic to deter a determined toddler. The smaller Genelec like the 8040's are quite protected and show up on somewhat trusted second hand sites like reverb.com for about ~$500-800 pair every now and then, which is hard to beat given the built in amps.

Used 8040s is a good call. Nice price point (bit higher in UK though I think).