For the past 2 years, the holiday season (not exactly Christmas day, but near to it) has offered rock-bottom prices for alts.
This chart shows 5 of the major alts (ones with enough volume and history to chart this far back) against BTC. If history repeats itself, and they come down to meet my green arrow, it should offer an OTE on a wide array of altcoins. However, the yellow, or red fib lines may be all we get due to the increased market activity this year. But the depression caused by most of the market being on holiday, needing money for presents, and simply not paying attention means it should offer good long entries across the board regardless of the surrounding circumstances.