Not bad. Pretty cool
These are similar to my idea for my pokemon face balls xD Only Mine is the just the face and ears rather than ears and tail.
are they for sale?
Well, not these specifically (I don't like doing canon, plain egg adoptables; I'm more specialized to custom things) XD But I have open point commissions for adoptables/eggs/hatching/etc; so if you want a custom eevee/pokemon egg adoptable and/or hatchable, then you can just check out me journal [link] and just send me a not about what you want ;3