go drop like $10 on some sculpy at your craft store and make some.

Super Sculpey, specifically. Original Sculpey is a nightmare to try to make into anything because every detail you add deforms the ones around it and the lightest idle touch in the wrong place can massively deform the whole piece, and Sculpey 3 varies wildly by color because the dyes affect how it works in more or less random ways. Super Sculpey, on the other hand, is pliable when worked but likes to hold its shape so detailing work doesn’t deform the nearby details unless it’s particularly extreme, and it won’t just squish when you’re turning it in your hands to work on it (though one still needs to be careful not to crush fine details, a light touch on bigger details usually won’t squish them).

I’ve heard similar good things about some other brands too, but I don’t have any first hand experience with them.