Crystals and runes are both wonderful areas of magick to explore, and both good things for practicing in a dorm room! 
As for the candles, I’m often on the road (and currently staying in a hotel room on vacation) so I know how it is with not being able to use candles 
There were some great alternatives shared in Wicca in College - Candle Replacements and I recently got these little flicker lights that, while not the same as actual fire, do help with the atmosphere and have been wonderful candle substitutes in anxiety spells and meditations 
And they travel great! 
I’m sure you’ll be able to find a substitute that works for you, Rae- Blessed be! 