For the Fantasy I'll be bringing my Skaven, all I'm missing is a Furnace and some conversions (Jezzails and Weapon Teams). All told, around 150 models is a daunting prospect, but I need to discipline myself and I can get it done.
For 40k I'll get my SW cav army done. It's just down to getting another box of Chaos Knights, converting them and my other marines and getting it all painted.
Should be fun, and I'll be documenting my progress as it happens.