I am looking for ready-made icon packs for abilities and items

[knotty kettle]

this feels like a client modding post which isn't what this server is for
this is purely for making addons ie custom games

unless I've misunderstood your question because the wording is strange

[cinder garnet]

I need vpk files that replace the icons for abilities and items in Dota.

[tender blaze]

That's modding Dota directly. This community is for custom games on the Arcade or similar. We just ironically call it Moddota.