Matters of national importance

I've never been big into nail bling, but these are very tempting.

*sigh* Thanks to a headdress I wanted being out of stock, I now have a spare 4000yen or so to spend on something else. I'm trying to decide between just getting something small like a pair of socks so I don't ruin my finances, or putting it towards a 15000yen bag or possibly skirt. Oh... help me decide, gais ;_;