A few good tools in the kitchen will make your baking life easier.
I use stainless steel bowls instead of glass since they are light and give you flexibility if you need to heat them quickly on the stove top.
I like to keep an uncluttered kitchen, but I make an exception to have an easy-to-reach container filled with spatulas and palette knifes. The palette knifes may seem like a strange choice but they come in handy for many recipes.
This is a digital thermometer. It is a bit more expensive than most kitchen supplies but well worth it. It is great when tempering chocolate or checking the temperature of boiled sugar.
A quick search on Amazon found this one. I bought mine bought in Japan so may not be available in the U.S. The plastic cover keeps all of those sticky fingers from making it a complete mess.