The first is the 'Xander unappreciated by the scoobies'. He starts his own business and makes a sword that Giles buys online for Buffy but Giles is unaware that it was made by Xander. Other than Tara (and Spike) no one really takes any notice of what is happening in Xander's life.
The second is where Xander carves statues and one - an image of the first slayer I think- comes to life and attacks him or maybe even Spike.
Sorry that I can remember so little - am gonna be impressed if folks can help but will be grateful if anyone has any ideas.